How Long Does Masseter Botox Take to Work? Jaw-Slimming Timeline and Dosage Explained | Rappoel Dermatology Seoul<\/title><br \/>\n<meta name=\"description\" content=\"Masseter Botox typically weakens the bite within 3-7 days, visibly relaxes the jaw muscle at 2-4 weeks, and reaches its best slimming effect at 4-8 weeks \u2014 the visible change comes from muscle atrophy, which simply takes time. Results last around 4-6 months, and longer for those on a regular treatment cadence as the muscle baseline thins.\">\n<link rel=\"alternate\" hreflang=\"en\" href=\"https:\/\/rappoel-clinic.com\/masseter-botox-onset-guide-en\/\" \/>\n<link rel=\"alternate\" hreflang=\"zh-TW\" href=\"https:\/\/rappoel-clinic.com\/masseter-botox-onset-guide-zh\/\" \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"MedicalClinic\", \"@id\": \"https:\/\/rappoel-clinic.com\/#clinic\", \"name\": \"Rappoel Dermatology Clinic\", \"alternateName\": [\"Rappoel \u76ae\u819a\u79d1\", \"\ub77c\ud3ec\uc5d8 \ud53c\ubd80\uacfc\"], \"url\": \"https:\/\/rappoel-clinic.com\", \"address\": {\"@type\": \"PostalAddress\", \"streetAddress\": \"77, Seocho-daero\", \"addressLocality\": \"Seocho-gu\", \"addressRegion\": \"Seoul\", \"postalCode\": \"06609\", \"addressCountry\": \"KR\"}, \"geo\": {\"@type\": \"GeoCoordinates\", \"latitude\": 37.4926, \"longitude\": 127.0175}, \"telephone\": \"+82-2-XXXX-XXXX\", \"openingHours\": [\"Mo-Fr 10:00-19:00\", \"Sa 10:00-17:00\"], \"medicalSpecialty\": \"Dermatology\", \"availableService\": [{\"@type\": \"MedicalProcedure\", \"name\": \"Thread Lift (Aptos)\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Hyaluronic Acid Filler\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Botulinum Toxin (Botox)\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Ultherapy \/ HIFU\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Skin Booster (Juvelook \/ Exosomes)\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Laser Skin Treatment\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Onda Coolwaves Body Contouring\"}], \"sameAs\": [\"https:\/\/www.instagram.com\/rappoel_official\"]}<\/script><br \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Article\", \"headline\": \"How Long Does Masseter Botox Take to Work? Jaw-Slimming Timeline and Dosage Explained | Rappoel Dermatology Seoul\", \"description\": \"Masseter Botox typically weakens the bite within 3-7 days, visibly relaxes the jaw muscle at 2-4 weeks, and reaches its best slimming effect at 4-8 weeks \u2014 the visible change comes from muscle atrophy, which simply takes time. Results last around 4-6 months, and longer for those on a regular treatment cadence as the muscle baseline thins.\", \"inLanguage\": \"en\", \"author\": {\"@type\": \"Organization\", \"name\": \"Rappoel Dermatology Clinic\"}, \"publisher\": {\"@type\": \"Organization\", \"name\": \"Rappoel Dermatology Clinic\", \"logo\": {\"@type\": \"ImageObject\", \"url\": \"https:\/\/rappoel-clinic.com\/wp-content\/uploads\/2026\/04\/favicon-512.png\"}}, \"about\": {\"@id\": \"https:\/\/rappoel-clinic.com\/#clinic\"}}<\/script><br \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How long does masseter Botox take to work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Bite weakness appears around 3-7 days, visible muscle relaxation and facial change at 2-4 weeks, and the best slimming effect at 4-8 weeks. Jaw slimming is slower than wrinkle treatment by nature \u2014 the visible change is muscle atrophy, which takes weeks. Results last about 4-6 months.\"}}, {\"@type\": \"Question\", \"name\": \"Why does jaw Botox work slower than forehead Botox?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Wrinkle results mean the muscle stops moving, which is felt within days of the nerve blockade. Jaw slimming means the muscle gets smaller \u2014 the product of sustained relaxation causing atrophy over 4-8 weeks. The drug starts acting at the same speed (24-72 hours); only the visible result takes longer.\"}}, {\"@type\": \"Question\", \"name\": \"How long do masseter Botox results last?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"About 4-6 months. As nerve signals return, the muscle gradually regains thickness. Patients who complete 2-3 regular sessions often see longer-lasting visual results because the baseline muscle is thinner. Plan the next session as effects fade, keeping intervals of 3-4 months or more to reduce antibody risk.\"}}, {\"@type\": \"Question\", \"name\": \"Will masseter Botox affect my eating?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Bite strength decreases \u2014 that is the mechanism. Most people adapt within 2-4 weeks with minor habit changes (avoiding very hard foods). If a high dose causes pronounced chewing weakness and slow meals, it improves within weeks as the toxin metabolizes. This is exactly why dosing leans conservative.\"}}, {\"@type\": \"Question\", \"name\": \"How do I know if my square jaw is muscle-type or fat-type?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A simple self-test: clench your teeth in front of a mirror and feel the jaw angles. A firm bulge when clenching and a square angle at rest point to muscle type, where Botox works well. A round face without a clenching bulge, with pinched fat, is fat type, where Botox helps less. Mixed type is most common, and a naturally wide mandible cannot be changed by Botox \u2014 all assessed at consultation.\"}}, {\"@type\": \"Question\", \"name\": \"How much Botox does the masseter need per session?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The physician determines the dose by muscle thickness and goals; both sides combined commonly fall in the range of tens to around a hundred units. Underdosing gives short-lived results; overdosing compromises chewing and smile symmetry. A conservative first dose with a 4-6 week review is safer than full correction at once.\"}}, {\"@type\": \"Question\", \"name\": \"What should I avoid after masseter Botox?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No lying down or pressing the area for 4-6 hours; avoid intense exercise and heat that day. For a week, avoid excessive chewing of hard items (gum, nuts, dried squid) so the toxin settles in. Do not massage the jawline, to prevent diffusion into neighboring muscles causing an asymmetric smile.\"}}, {\"@type\": \"Question\", \"name\": \"My smile looks asymmetric after masseter Botox \u2014 what should I do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This usually reflects diffusion into adjacent smile muscles and is uncommon. Mild asymmetry often improves within 2-4 weeks as distribution stabilizes; pronounced cases can be reviewed by the physician. The risk relates mainly to overly superficial injection, and choosing a physician familiar with the anatomy reduces it.\"}}, {\"@type\": \"Question\", \"name\": \"How many sessions until the jaw stays slim?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Most people see clear change 4-8 weeks after the first session, but maintaining it takes 2-3 or more regular sessions. The continuously relaxed muscle grows progressively thinner, and results last longer after the second session onward. Intervals of 3-6 months, adjusted to how fast the effect fades.\"}}, {\"@type\": \"Question\", \"name\": \"Who should not get masseter Botox?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Pregnant or breastfeeding patients, those with neuromuscular disorders like myasthenia gravis, active infection at the site, or allergy to components. Also, anyone whose occupation depends on forceful chewing or who needs to eat heavily in the short term should discuss the functional impact before deciding.\"}}]}<\/script><\/p>\n<style>\n*{box-sizing:border-box;margin:0;padding:0}\nbody{font-family:'PingFang SC','Noto Sans KR',sans-serif;background:#fffcf7;color:#3d2e1e;line-height:1.8}\n.wrap{max-width:677px;margin:0 auto;padding:32px 20px 60px}\n.banner{background:#FFF8EC;text-align:center;padding:36px 20px 28px;margin-bottom:36px;border-bottom:1px solid #e8d5c0}\n.banner-tag{font-size:11px;letter-spacing:3px;color:#8B7355;text-transform:uppercase;margin-bottom:12px}\n.banner h1{font-size:24px;color:#3d2e1e;line-height:1.4;margin-bottom:12px}\n.banner .sub{font-size:13px;color:#6b5240;line-height:1.7}\nh2{font-size:19px;color:#3d2e1e;margin:32px 0 14px;padding-bottom:8px;border-bottom:1px solid #e8d5c0}\nh3{font-size:16px;color:#3d2e1e;margin:22px 0 10px}\np{font-size:15px;color:#555;line-height:1.9;margin-bottom:14px}\n.highlight{background:#fff;border:1px solid #f0e8dc;border-left:3px solid #D4A574;padding:16px 20px;margin:22px 0;border-radius:0 6px 6px 0}\n.highlight p{margin:0;font-size:14px;color:#6b5240}\n.card{background:#F5E6C8;border:1px solid #e8d5c0;border-radius:8px;padding:18px 22px;margin:16px 0}\n.card-title{font-size:13px;font-weight:700;color:#3d2e1e;margin-bottom:6px}\n.card p{font-size:14px;margin:0}\n.faq-item{margin:14px 0;border-bottom:1px solid #f0e8dc;padding-bottom:14px}\n.faq-q{font-weight:700;color:#3d2e1e;font-size:15px;margin-bottom:6px}\n.faq-a{font-size:14px;color:#555;line-height:1.8}\n.cta{background:#F5E6C8;text-align:center;padding:32px 20px;margin-top:40px;border-radius:8px}\n.cta h3{font-size:17px;color:#3d2e1e;margin-bottom:8px}\n.cta p{font-size:13px;color:#6b5240;margin-bottom:4px}\nimg{max-width:100%;height:auto;display:block;margin:20px auto;border-radius:6px}\nul,ol{padding-left:22px;margin-bottom:14px}\nli{font-size:15px;color:#555;line-height:1.9;margin-bottom:4px}\n.schema-block{display:none}\n@media(max-width:600px){.wrap{padding:20px 14px 40px}.banner h1{font-size:20px}}\n<\/style>\n<p><\/head><br \/>\n<body><\/p>\n<div class=\"wrap\">\n<div class=\"banner\">\n<div class=\"banner-tag\">Masseter Botox \u00b7 Jaw Slimming \u00b7 Onset Time \u00b7 Rappoel Dermatology<\/div>\n<h1>How Long Does Masseter Botox Take to Work? Jaw-Slimming Timeline and Dosage Explained | Rappoel Dermatology Seoul<\/h1>\n<div class=\"sub\">Masseter Botox typically weakens the bite within 3-7 days, visibly relaxes the jaw muscle at 2-4 weeks, and reaches its best slimming effect at 4-8 weeks \u2014 the visible change comes from muscle atrophy, which simply takes time. Results last around 4-6 months, and longer for those on a regular treatment cadence as the muscle baseline thins.<\/div>\n<\/p><\/div>\n<div class=\"highlight\">\n<p><strong>Direct answer:<\/strong> Masseter Botox begins weakening the bite around 3-7 days after injection, visibly relaxes the jaw muscle at 2-4 weeks, and delivers its best face-slimming effect at 4-8 weeks. Jaw slimming is slower than wrinkle treatment because the visible change comes from muscle volume shrinking, not just relaxation. Results last about 4-6 months.<\/p>\n<\/div>\n<p>‘Why did my friend’s forehead Botox work in three days, but my jaw took almost a month?’ This is the most common question about masseter treatment. The answer is simple: wrinkle results are about the muscle not moving \u2014 noticeable within days. Jaw slimming is about the muscle getting smaller \u2014 that is atrophy, and atrophy takes weeks. Understanding this timeline prevents mistaking ‘not yet’ for ‘not working’.<\/p>\n<h2>The masseter Botox timeline, stage by stage<\/h2>\n<ul>\n<li><strong>Days 3-7 (onset):<\/strong> chewing hard foods (gum, dried squid, nuts) starts to feel effortful \u2014 direct evidence the toxin is blocking nerve signals<\/li>\n<li><strong>Weeks 2-4 (relaxation):<\/strong> the masseter is clearly relaxed; the muscle feels softer at the jaw angle and facial lines begin to soften<\/li>\n<li><strong>Weeks 4-8 (atrophy, peak effect):<\/strong> a chronically relaxed muscle shrinks through disuse, and the most visible jawline improvement appears in this window<\/li>\n<li><strong>Months 3-4 onward (wear-off):<\/strong> nerve signals gradually return and the muscle resumes work; for patients on regular schedules the visual result lasts longer because the baseline muscle is thinner<\/li>\n<\/ul>\n<h2>Why is jaw slimming slower than wrinkle treatment? A two-stage effect<\/h2>\n<p>Botulinum toxin blocks acetylcholine release at the nerve endings, so the muscle stops receiving contraction orders. That blockade begins within 24-72 hours \u2014 which is why ‘muscle not moving’ shows up fast. But the end goal of jaw slimming is a smaller muscle: with no workload, protein breaks down and fibers thin over 4-8 weeks. In short: the drug starts in three days; the result takes a month to form.<\/p>\n<h2>Dosage and effect: why not inject more at once?<\/h2>\n<p>Masseter dosing is a balance between effect and function. Underdosing yields subtle atrophy and short-lived results; overdosing weakens the bite so much that chewing becomes laborious and, rarely, speech clarity is briefly affected. The physician decides the dose based on muscle thickness (assessed by having you clench during consultation), your facial goals, and lifestyle needs. A conservative first dose with a 4-6 week review beats chasing perfection in one visit.<\/p>\n<h2>Muscle-type or fat-type jaw? How to tell<\/h2>\n<ul>\n<li><strong>Self-test \u00b7 clench check:<\/strong> clench your teeth in front of a mirror and feel both jaw angles \u2014 a firm bulge when clenching plus a square angle at rest points to muscle type, where Botox works well<\/li>\n<li><strong>Fat-type features:<\/strong> a round face with no obvious muscle bulge when clenching, and a thick pinch of subcutaneous fat \u2014 Botox has limited effect here and other options should be discussed<\/li>\n<li><strong>Mixed type is most common:<\/strong> most people have both; Botox addresses the muscle component while fat needs a different approach, planned together at consultation<\/li>\n<li><strong>Bone-type:<\/strong> a naturally wide mandible (a square bone structure) cannot be reshaped by Botox \u2014 understanding the limits matters<\/li>\n<\/ul>\n<h2>Rappoel’s real masseter Botox process<\/h2>\n<ul>\n<li><strong>Step 1 \u00b7 Consultation:<\/strong> repeated clenching while the physician palpates masseter thickness and contraction strength, confirming the muscle component and dose direction<\/li>\n<li><strong>Step 2 \u00b7 Photo documentation:<\/strong> frontal and lateral photos, clenching and relaxed, as the baseline for the 4-8 week comparison<\/li>\n<li><strong>Step 3 \u00b7 Cleansing:<\/strong> masseter injections usually need no topical anesthesia; a fine needle is used after disinfection<\/li>\n<li><strong>Step 4 \u00b7 Point-by-point injection:<\/strong> 3-6 points following the muscle’s orientation, staying deep to reduce diffusion into the smile muscles \u2014 too superficial risks an asymmetric smile<\/li>\n<li><strong>Step 5 \u00b7 Icing and aftercare instructions:<\/strong> brief icing, plus instructions to avoid lying down or pressing the area for 4-6 hours and intense exercise that day<\/li>\n<li><strong>Step 6 \u00b7 Follow-up:<\/strong> photos at 4-8 weeks to compare and decide on dose fine-tuning or the next session timing<\/li>\n<\/ul>\n<h2>Side effects and unsuitable candidates<\/h2>\n<ul>\n<li><strong>Common and temporary:<\/strong> soreness at the injection site for 1-2 days; reduced bite strength (the therapeutic goal itself, though excess affects eating); chewing fatigue usually adapts within 2-4 weeks<\/li>\n<li><strong>Less common, requires a visit:<\/strong> asymmetric smile (toxin diffusion into adjacent muscles), chewing difficulty persisting beyond two months, mildly slurred speech \u2014 these typically resolve as the toxin wears off<\/li>\n<li><strong>Not recommended for:<\/strong> pregnant or breastfeeding patients, neuromuscular disorders such as myasthenia gravis, active infection at the site, or allergy to components<\/li>\n<li><strong>Special note:<\/strong> those whose work depends on forceful chewing (certain athletes) or who need to regain weight quickly should discuss functional impact with the physician first<\/li>\n<\/ul>\n<p><strong>Related reading:<\/strong> full treatment overview in <a href=\"https:\/\/rappoel-clinic.com\/masseter-botox-jawline-slimming-seoul-rappoel-en\/\">Masseter Botox Jaw Slimming<\/a>; a Coretox plan for square jaws in <a href=\"https:\/\/rappoel-clinic.com\/coretox-masseter-slim-square-jaw-seoul-rappoel-en\/\">Coretox Square Jaw Slimming<\/a>; injection frequency planning in <a href=\"https:\/\/rappoel-clinic.com\/botox-injection-frequency-guide-en\/\">How Often Should You Get Botox<\/a>; resistance prevention in <a href=\"https:\/\/rappoel-clinic.com\/botox-resistance-tolerance-guide-en\/\">Botox Resistance and Tolerance<\/a>.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<div class=\"faq-item\">\n<div class=\"faq-q\">How long does masseter Botox take to work?<\/div>\n<div class=\"faq-a\">Bite weakness appears around 3-7 days, visible muscle relaxation and facial change at 2-4 weeks, and the best slimming effect at 4-8 weeks. Jaw slimming is slower than wrinkle treatment by nature \u2014 the visible change is muscle atrophy, which takes weeks. Results last about 4-6 months.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">Why does jaw Botox work slower than forehead Botox?<\/div>\n<div class=\"faq-a\">Wrinkle results mean the muscle stops moving, which is felt within days of the nerve blockade. Jaw slimming means the muscle gets smaller \u2014 the product of sustained relaxation causing atrophy over 4-8 weeks. The drug starts acting at the same speed (24-72 hours); only the visible result takes longer.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">How long do masseter Botox results last?<\/div>\n<div class=\"faq-a\">About 4-6 months. As nerve signals return, the muscle gradually regains thickness. Patients who complete 2-3 regular sessions often see longer-lasting visual results because the baseline muscle is thinner. Plan the next session as effects fade, keeping intervals of 3-4 months or more to reduce antibody risk.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">Will masseter Botox affect my eating?<\/div>\n<div class=\"faq-a\">Bite strength decreases \u2014 that is the mechanism. Most people adapt within 2-4 weeks with minor habit changes (avoiding very hard foods). If a high dose causes pronounced chewing weakness and slow meals, it improves within weeks as the toxin metabolizes. This is exactly why dosing leans conservative.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">How do I know if my square jaw is muscle-type or fat-type?<\/div>\n<div class=\"faq-a\">A simple self-test: clench your teeth in front of a mirror and feel the jaw angles. A firm bulge when clenching and a square angle at rest point to muscle type, where Botox works well. A round face without a clenching bulge, with pinched fat, is fat type, where Botox helps less. Mixed type is most common, and a naturally wide mandible cannot be changed by Botox \u2014 all assessed at consultation.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">How much Botox does the masseter need per session?<\/div>\n<div class=\"faq-a\">The physician determines the dose by muscle thickness and goals; both sides combined commonly fall in the range of tens to around a hundred units. Underdosing gives short-lived results; overdosing compromises chewing and smile symmetry. A conservative first dose with a 4-6 week review is safer than full correction at once.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">What should I avoid after masseter Botox?<\/div>\n<div class=\"faq-a\">No lying down or pressing the area for 4-6 hours; avoid intense exercise and heat that day. For a week, avoid excessive chewing of hard items (gum, nuts, dried squid) so the toxin settles in. Do not massage the jawline, to prevent diffusion into neighboring muscles causing an asymmetric smile.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">My smile looks asymmetric after masseter Botox \u2014 what should I do?<\/div>\n<div class=\"faq-a\">This usually reflects diffusion into adjacent smile muscles and is uncommon. Mild asymmetry often improves within 2-4 weeks as distribution stabilizes; pronounced cases can be reviewed by the physician. The risk relates mainly to overly superficial injection, and choosing a physician familiar with the anatomy reduces it.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">How many sessions until the jaw stays slim?<\/div>\n<div class=\"faq-a\">Most people see clear change 4-8 weeks after the first session, but maintaining it takes 2-3 or more regular sessions. The continuously relaxed muscle grows progressively thinner, and results last longer after the second session onward. Intervals of 3-6 months, adjusted to how fast the effect fades.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">Who should not get masseter Botox?<\/div>\n<div class=\"faq-a\">Pregnant or breastfeeding patients, those with neuromuscular disorders like myasthenia gravis, active infection at the site, or allergy to components. Also, anyone whose occupation depends on forceful chewing or who needs to eat heavily in the short term should discuss the functional impact before deciding.<\/div>\n<\/div>\n<div class=\"cta\">\n<h3>Not sure whether your square jaw is muscle-type or fat-type? Rappoel physicians assess by palpation and recommend the right plan!<\/h3>\n<p>\ud83d\udccd 77, Seocho-daero, Seocho-gu, Seoul, South Korea<\/p>\n<p>\ud83d\udd50 Mon\u2013Fri 10:00\u201319:00 \u00b7 Sat 10:00\u201317:00<\/p>\n<p>\ud83d\udcac WeChat Main: rappoelkr | WeChat Backup: rappoelkr2 | LINE: rappoelkr<\/p>\n<p style=\"margin-top:16px;font-size:13px;color:#8B7355;\">Scan to connect with us<\/p>\n<div style=\"display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-top:10px;\">\n<div style=\"text-align:center;\">\n <img decoding=\"async\" src=\"https:\/\/rappoel-clinic.com\/wp-content\/uploads\/2026\/04\/Rappoel\u5fae\u4fe1\u4e8c\u7ef4\u7801\uff08\u4e3b\u53f7\uff09-1.png\" alt=\"WeChat Main QR Code\" style=\"width:120px;height:120px;border-radius:6px;\" \/><\/p>\n<p style=\"font-size:11px;color:#6b5240;margin-top:4px;\">WeChat (Main)<\/p>\n<\/p><\/div>\n<div style=\"text-align:center;\">\n <img decoding=\"async\" src=\"https:\/\/rappoel-clinic.com\/wp-content\/uploads\/2026\/04\/Rappoel\u5fae\u4fe1\u4e8c\u7ef4\u7801\uff08\u5907\u7528\u53f7\uff09-1.png\" alt=\"WeChat Backup QR Code\" style=\"width:120px;height:120px;border-radius:6px;\" \/><\/p>\n<p style=\"font-size:11px;color:#6b5240;margin-top:4px;\">WeChat (Backup)<\/p>\n<\/p><\/div>\n<div style=\"text-align:center;\">\n <img decoding=\"async\" src=\"https:\/\/rappoel-clinic.com\/wp-content\/uploads\/2026\/04\/Line\u4e8c\u7ef4\u7801-1.jpg\" alt=\"LINE QR Code\" style=\"width:120px;height:120px;border-radius:6px;\" \/><\/p>\n<p style=\"font-size:11px;color:#6b5240;margin-top:4px;\">LINE<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n<\/div>\n<p><\/body><br \/>\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Masseter Botox typically weakens the bite within 3-7 days, visibly relaxes the jaw muscle at 2-4 weeks, and reaches its best slimming effect at 4-8 weeks \u2014 the visible change comes from muscle atrophy, which simply takes time. Results last around 4-6 months, and longer for those on a regular treatment cadence as the muscle baseline thins.<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[66],"tags":[],"class_list":["post-2130","post","type-post","status-publish","format-standard","hentry","category-botox-en"],"_links":{"self":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/2130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/comments?post=2130"}],"version-history":[{"count":1,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/2130\/revisions"}],"predecessor-version":[{"id":2132,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/2130\/revisions\/2132"}],"wp:attachment":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/media?parent=2130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/categories?post=2130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/tags?post=2130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

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\nHow Long Does Masseter Botox Take to Work? Jaw-Slimming Timeline and Dosage Explained | Rappoel Dermatology Seoul<\/title><br \/>\n<meta name=\"description\" content=\"Masseter Botox typically weakens the bite within 3-7 days, visibly relaxes the jaw muscle at 2-4 weeks, and reaches its best slimming effect at 4-8 weeks \u2014 the visible change comes from muscle atrophy, which simply takes time. Results last around 4-6 months, and longer for those on a regular treatment cadence as the muscle baseline thins.\">\n<link rel=\"alternate\" hreflang=\"en\" href=\"https:\/\/rappoel-clinic.com\/masseter-botox-onset-guide-en\/\" \/>\n<link rel=\"alternate\" hreflang=\"zh-TW\" href=\"https:\/\/rappoel-clinic.com\/masseter-botox-onset-guide-zh\/\" \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"MedicalClinic\", \"@id\": \"https:\/\/rappoel-clinic.com\/#clinic\", \"name\": \"Rappoel Dermatology Clinic\", \"alternateName\": [\"Rappoel \u76ae\u819a\u79d1\", \"\ub77c\ud3ec\uc5d8 \ud53c\ubd80\uacfc\"], \"url\": \"https:\/\/rappoel-clinic.com\", \"address\": {\"@type\": \"PostalAddress\", \"streetAddress\": \"77, Seocho-daero\", \"addressLocality\": \"Seocho-gu\", \"addressRegion\": \"Seoul\", \"postalCode\": \"06609\", \"addressCountry\": \"KR\"}, \"geo\": {\"@type\": \"GeoCoordinates\", \"latitude\": 37.4926, \"longitude\": 127.0175}, \"telephone\": \"+82-2-XXXX-XXXX\", \"openingHours\": [\"Mo-Fr 10:00-19:00\", \"Sa 10:00-17:00\"], \"medicalSpecialty\": \"Dermatology\", \"availableService\": [{\"@type\": \"MedicalProcedure\", \"name\": \"Thread Lift (Aptos)\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Hyaluronic Acid Filler\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Botulinum Toxin (Botox)\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Ultherapy \/ HIFU\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Skin Booster (Juvelook \/ Exosomes)\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Laser Skin Treatment\"}, {\"@type\": \"MedicalProcedure\", \"name\": \"Onda Coolwaves Body Contouring\"}], \"sameAs\": [\"https:\/\/www.instagram.com\/rappoel_official\"]}<\/script><br \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Article\", \"headline\": \"How Long Does Masseter Botox Take to Work? Jaw-Slimming Timeline and Dosage Explained | Rappoel Dermatology Seoul\", \"description\": \"Masseter Botox typically weakens the bite within 3-7 days, visibly relaxes the jaw muscle at 2-4 weeks, and reaches its best slimming effect at 4-8 weeks \u2014 the visible change comes from muscle atrophy, which simply takes time. Results last around 4-6 months, and longer for those on a regular treatment cadence as the muscle baseline thins.\", \"inLanguage\": \"en\", \"author\": {\"@type\": \"Organization\", \"name\": \"Rappoel Dermatology Clinic\"}, \"publisher\": {\"@type\": \"Organization\", \"name\": \"Rappoel Dermatology Clinic\", \"logo\": {\"@type\": \"ImageObject\", \"url\": \"https:\/\/rappoel-clinic.com\/wp-content\/uploads\/2026\/04\/favicon-512.png\"}}, \"about\": {\"@id\": \"https:\/\/rappoel-clinic.com\/#clinic\"}}<\/script><br \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How long does masseter Botox take to work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Bite weakness appears around 3-7 days, visible muscle relaxation and facial change at 2-4 weeks, and the best slimming effect at 4-8 weeks. Jaw slimming is slower than wrinkle treatment by nature \u2014 the visible change is muscle atrophy, which takes weeks. Results last about 4-6 months.\"}}, {\"@type\": \"Question\", \"name\": \"Why does jaw Botox work slower than forehead Botox?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Wrinkle results mean the muscle stops moving, which is felt within days of the nerve blockade. Jaw slimming means the muscle gets smaller \u2014 the product of sustained relaxation causing atrophy over 4-8 weeks. The drug starts acting at the same speed (24-72 hours); only the visible result takes longer.\"}}, {\"@type\": \"Question\", \"name\": \"How long do masseter Botox results last?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"About 4-6 months. As nerve signals return, the muscle gradually regains thickness. Patients who complete 2-3 regular sessions often see longer-lasting visual results because the baseline muscle is thinner. Plan the next session as effects fade, keeping intervals of 3-4 months or more to reduce antibody risk.\"}}, {\"@type\": \"Question\", \"name\": \"Will masseter Botox affect my eating?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Bite strength decreases \u2014 that is the mechanism. Most people adapt within 2-4 weeks with minor habit changes (avoiding very hard foods). If a high dose causes pronounced chewing weakness and slow meals, it improves within weeks as the toxin metabolizes. This is exactly why dosing leans conservative.\"}}, {\"@type\": \"Question\", \"name\": \"How do I know if my square jaw is muscle-type or fat-type?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A simple self-test: clench your teeth in front of a mirror and feel the jaw angles. A firm bulge when clenching and a square angle at rest point to muscle type, where Botox works well. A round face without a clenching bulge, with pinched fat, is fat type, where Botox helps less. 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Do not massage the jawline, to prevent diffusion into neighboring muscles causing an asymmetric smile.\"}}, {\"@type\": \"Question\", \"name\": \"My smile looks asymmetric after masseter Botox \u2014 what should I do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This usually reflects diffusion into adjacent smile muscles and is uncommon. Mild asymmetry often improves within 2-4 weeks as distribution stabilizes; pronounced cases can be reviewed by the physician. The risk relates mainly to overly superficial injection, and choosing a physician familiar with the anatomy reduces it.\"}}, {\"@type\": \"Question\", \"name\": \"How many sessions until the jaw stays slim?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Most people see clear change 4-8 weeks after the first session, but maintaining it takes 2-3 or more regular sessions. The continuously relaxed muscle grows progressively thinner, and results last longer after the second session onward. Intervals of 3-6 months, adjusted to how fast the effect fades.\"}}, {\"@type\": \"Question\", \"name\": \"Who should not get masseter Botox?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Pregnant or breastfeeding patients, those with neuromuscular disorders like myasthenia gravis, active infection at the site, or allergy to components. Also, anyone whose occupation depends on forceful chewing or who needs to eat heavily in the short term should discuss the functional impact before deciding.\"}}]}<\/script><\/p>\n<style>\n*{box-sizing:border-box;margin:0;padding:0}\nbody{font-family:'PingFang SC','Noto Sans KR',sans-serif;background:#fffcf7;color:#3d2e1e;line-height:1.8}\n.wrap{max-width:677px;margin:0 auto;padding:32px 20px 60px}\n.banner{background:#FFF8EC;text-align:center;padding:36px 20px 28px;margin-bottom:36px;border-bottom:1px solid #e8d5c0}\n.banner-tag{font-size:11px;letter-spacing:3px;color:#8B7355;text-transform:uppercase;margin-bottom:12px}\n.banner h1{font-size:24px;color:#3d2e1e;line-height:1.4;margin-bottom:12px}\n.banner .sub{font-size:13px;color:#6b5240;line-height:1.7}\nh2{font-size:19px;color:#3d2e1e;margin:32px 0 14px;padding-bottom:8px;border-bottom:1px solid #e8d5c0}\nh3{font-size:16px;color:#3d2e1e;margin:22px 0 10px}\np{font-size:15px;color:#555;line-height:1.9;margin-bottom:14px}\n.highlight{background:#fff;border:1px solid #f0e8dc;border-left:3px solid #D4A574;padding:16px 20px;margin:22px 0;border-radius:0 6px 6px 0}\n.highlight p{margin:0;font-size:14px;color:#6b5240}\n.card{background:#F5E6C8;border:1px solid #e8d5c0;border-radius:8px;padding:18px 22px;margin:16px 0}\n.card-title{font-size:13px;font-weight:700;color:#3d2e1e;margin-bottom:6px}\n.card p{font-size:14px;margin:0}\n.faq-item{margin:14px 0;border-bottom:1px solid #f0e8dc;padding-bottom:14px}\n.faq-q{font-weight:700;color:#3d2e1e;font-size:15px;margin-bottom:6px}\n.faq-a{font-size:14px;color:#555;line-height:1.8}\n.cta{background:#F5E6C8;text-align:center;padding:32px 20px;margin-top:40px;border-radius:8px}\n.cta h3{font-size:17px;color:#3d2e1e;margin-bottom:8px}\n.cta p{font-size:13px;color:#6b5240;margin-bottom:4px}\nimg{max-width:100%;height:auto;display:block;margin:20px auto;border-radius:6px}\nul,ol{padding-left:22px;margin-bottom:14px}\nli{font-size:15px;color:#555;line-height:1.9;margin-bottom:4px}\n.schema-block{display:none}\n@media(max-width:600px){.wrap{padding:20px 14px 40px}.banner h1{font-size:20px}}\n<\/style>\n<p><\/head><br \/>\n<body><\/p>\n<div class=\"wrap\">\n<div class=\"banner\">\n<div class=\"banner-tag\">Masseter Botox \u00b7 Jaw Slimming \u00b7 Onset Time \u00b7 Rappoel Dermatology<\/div>\n<h1>How Long Does Masseter Botox Take to Work? Jaw-Slimming Timeline and Dosage Explained | Rappoel Dermatology Seoul<\/h1>\n<div class=\"sub\">Masseter Botox typically weakens the bite within 3-7 days, visibly relaxes the jaw muscle at 2-4 weeks, and reaches its best slimming effect at 4-8 weeks \u2014 the visible change comes from muscle atrophy, which simply takes time. Results last around 4-6 months, and longer for those on a regular treatment cadence as the muscle baseline thins.<\/div>\n<\/p><\/div>\n<div class=\"highlight\">\n<p><strong>Direct answer:<\/strong> Masseter Botox begins weakening the bite around 3-7 days after injection, visibly relaxes the jaw muscle at 2-4 weeks, and delivers its best face-slimming effect at 4-8 weeks. Jaw slimming is slower than wrinkle treatment because the visible change comes from muscle volume shrinking, not just relaxation. Results last about 4-6 months.<\/p>\n<\/div>\n<p>‘Why did my friend’s forehead Botox work in three days, but my jaw took almost a month?’ This is the most common question about masseter treatment. The answer is simple: wrinkle results are about the muscle not moving \u2014 noticeable within days. Jaw slimming is about the muscle getting smaller \u2014 that is atrophy, and atrophy takes weeks. Understanding this timeline prevents mistaking ‘not yet’ for ‘not working’.<\/p>\n<h2>The masseter Botox timeline, stage by stage<\/h2>\n<ul>\n<li><strong>Days 3-7 (onset):<\/strong> chewing hard foods (gum, dried squid, nuts) starts to feel effortful \u2014 direct evidence the toxin is blocking nerve signals<\/li>\n<li><strong>Weeks 2-4 (relaxation):<\/strong> the masseter is clearly relaxed; the muscle feels softer at the jaw angle and facial lines begin to soften<\/li>\n<li><strong>Weeks 4-8 (atrophy, peak effect):<\/strong> a chronically relaxed muscle shrinks through disuse, and the most visible jawline improvement appears in this window<\/li>\n<li><strong>Months 3-4 onward (wear-off):<\/strong> nerve signals gradually return and the muscle resumes work; for patients on regular schedules the visual result lasts longer because the baseline muscle is thinner<\/li>\n<\/ul>\n<h2>Why is jaw slimming slower than wrinkle treatment? A two-stage effect<\/h2>\n<p>Botulinum toxin blocks acetylcholine release at the nerve endings, so the muscle stops receiving contraction orders. That blockade begins within 24-72 hours \u2014 which is why ‘muscle not moving’ shows up fast. But the end goal of jaw slimming is a smaller muscle: with no workload, protein breaks down and fibers thin over 4-8 weeks. In short: the drug starts in three days; the result takes a month to form.<\/p>\n<h2>Dosage and effect: why not inject more at once?<\/h2>\n<p>Masseter dosing is a balance between effect and function. Underdosing yields subtle atrophy and short-lived results; overdosing weakens the bite so much that chewing becomes laborious and, rarely, speech clarity is briefly affected. The physician decides the dose based on muscle thickness (assessed by having you clench during consultation), your facial goals, and lifestyle needs. A conservative first dose with a 4-6 week review beats chasing perfection in one visit.<\/p>\n<h2>Muscle-type or fat-type jaw? How to tell<\/h2>\n<ul>\n<li><strong>Self-test \u00b7 clench check:<\/strong> clench your teeth in front of a mirror and feel both jaw angles \u2014 a firm bulge when clenching plus a square angle at rest points to muscle type, where Botox works well<\/li>\n<li><strong>Fat-type features:<\/strong> a round face with no obvious muscle bulge when clenching, and a thick pinch of subcutaneous fat \u2014 Botox has limited effect here and other options should be discussed<\/li>\n<li><strong>Mixed type is most common:<\/strong> most people have both; Botox addresses the muscle component while fat needs a different approach, planned together at consultation<\/li>\n<li><strong>Bone-type:<\/strong> a naturally wide mandible (a square bone structure) cannot be reshaped by Botox \u2014 understanding the limits matters<\/li>\n<\/ul>\n<h2>Rappoel’s real masseter Botox process<\/h2>\n<ul>\n<li><strong>Step 1 \u00b7 Consultation:<\/strong> repeated clenching while the physician palpates masseter thickness and contraction strength, confirming the muscle component and dose direction<\/li>\n<li><strong>Step 2 \u00b7 Photo documentation:<\/strong> frontal and lateral photos, clenching and relaxed, as the baseline for the 4-8 week comparison<\/li>\n<li><strong>Step 3 \u00b7 Cleansing:<\/strong> masseter injections usually need no topical anesthesia; a fine needle is used after disinfection<\/li>\n<li><strong>Step 4 \u00b7 Point-by-point injection:<\/strong> 3-6 points following the muscle’s orientation, staying deep to reduce diffusion into the smile muscles \u2014 too superficial risks an asymmetric smile<\/li>\n<li><strong>Step 5 \u00b7 Icing and aftercare instructions:<\/strong> brief icing, plus instructions to avoid lying down or pressing the area for 4-6 hours and intense exercise that day<\/li>\n<li><strong>Step 6 \u00b7 Follow-up:<\/strong> photos at 4-8 weeks to compare and decide on dose fine-tuning or the next session timing<\/li>\n<\/ul>\n<h2>Side effects and unsuitable candidates<\/h2>\n<ul>\n<li><strong>Common and temporary:<\/strong> soreness at the injection site for 1-2 days; reduced bite strength (the therapeutic goal itself, though excess affects eating); chewing fatigue usually adapts within 2-4 weeks<\/li>\n<li><strong>Less common, requires a visit:<\/strong> asymmetric smile (toxin diffusion into adjacent muscles), chewing difficulty persisting beyond two months, mildly slurred speech \u2014 these typically resolve as the toxin wears off<\/li>\n<li><strong>Not recommended for:<\/strong> pregnant or breastfeeding patients, neuromuscular disorders such as myasthenia gravis, active infection at the site, or allergy to components<\/li>\n<li><strong>Special note:<\/strong> those whose work depends on forceful chewing (certain athletes) or who need to regain weight quickly should discuss functional impact with the physician first<\/li>\n<\/ul>\n<p><strong>Related reading:<\/strong> full treatment overview in <a href=\"https:\/\/rappoel-clinic.com\/masseter-botox-jawline-slimming-seoul-rappoel-en\/\">Masseter Botox Jaw Slimming<\/a>; a Coretox plan for square jaws in <a href=\"https:\/\/rappoel-clinic.com\/coretox-masseter-slim-square-jaw-seoul-rappoel-en\/\">Coretox Square Jaw Slimming<\/a>; injection frequency planning in <a href=\"https:\/\/rappoel-clinic.com\/botox-injection-frequency-guide-en\/\">How Often Should You Get Botox<\/a>; resistance prevention in <a href=\"https:\/\/rappoel-clinic.com\/botox-resistance-tolerance-guide-en\/\">Botox Resistance and Tolerance<\/a>.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<div class=\"faq-item\">\n<div class=\"faq-q\">How long does masseter Botox take to work?<\/div>\n<div class=\"faq-a\">Bite weakness appears around 3-7 days, visible muscle relaxation and facial change at 2-4 weeks, and the best slimming effect at 4-8 weeks. Jaw slimming is slower than wrinkle treatment by nature \u2014 the visible change is muscle atrophy, which takes weeks. Results last about 4-6 months.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">Why does jaw Botox work slower than forehead Botox?<\/div>\n<div class=\"faq-a\">Wrinkle results mean the muscle stops moving, which is felt within days of the nerve blockade. Jaw slimming means the muscle gets smaller \u2014 the product of sustained relaxation causing atrophy over 4-8 weeks. The drug starts acting at the same speed (24-72 hours); only the visible result takes longer.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">How long do masseter Botox results last?<\/div>\n<div class=\"faq-a\">About 4-6 months. As nerve signals return, the muscle gradually regains thickness. Patients who complete 2-3 regular sessions often see longer-lasting visual results because the baseline muscle is thinner. Plan the next session as effects fade, keeping intervals of 3-4 months or more to reduce antibody risk.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">Will masseter Botox affect my eating?<\/div>\n<div class=\"faq-a\">Bite strength decreases \u2014 that is the mechanism. Most people adapt within 2-4 weeks with minor habit changes (avoiding very hard foods). If a high dose causes pronounced chewing weakness and slow meals, it improves within weeks as the toxin metabolizes. This is exactly why dosing leans conservative.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">How do I know if my square jaw is muscle-type or fat-type?<\/div>\n<div class=\"faq-a\">A simple self-test: clench your teeth in front of a mirror and feel the jaw angles. A firm bulge when clenching and a square angle at rest point to muscle type, where Botox works well. A round face without a clenching bulge, with pinched fat, is fat type, where Botox helps less. Mixed type is most common, and a naturally wide mandible cannot be changed by Botox \u2014 all assessed at consultation.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">How much Botox does the masseter need per session?<\/div>\n<div class=\"faq-a\">The physician determines the dose by muscle thickness and goals; both sides combined commonly fall in the range of tens to around a hundred units. Underdosing gives short-lived results; overdosing compromises chewing and smile symmetry. A conservative first dose with a 4-6 week review is safer than full correction at once.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">What should I avoid after masseter Botox?<\/div>\n<div class=\"faq-a\">No lying down or pressing the area for 4-6 hours; avoid intense exercise and heat that day. For a week, avoid excessive chewing of hard items (gum, nuts, dried squid) so the toxin settles in. Do not massage the jawline, to prevent diffusion into neighboring muscles causing an asymmetric smile.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">My smile looks asymmetric after masseter Botox \u2014 what should I do?<\/div>\n<div class=\"faq-a\">This usually reflects diffusion into adjacent smile muscles and is uncommon. Mild asymmetry often improves within 2-4 weeks as distribution stabilizes; pronounced cases can be reviewed by the physician. The risk relates mainly to overly superficial injection, and choosing a physician familiar with the anatomy reduces it.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">How many sessions until the jaw stays slim?<\/div>\n<div class=\"faq-a\">Most people see clear change 4-8 weeks after the first session, but maintaining it takes 2-3 or more regular sessions. The continuously relaxed muscle grows progressively thinner, and results last longer after the second session onward. Intervals of 3-6 months, adjusted to how fast the effect fades.<\/div>\n<\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">Who should not get masseter Botox?<\/div>\n<div class=\"faq-a\">Pregnant or breastfeeding patients, those with neuromuscular disorders like myasthenia gravis, active infection at the site, or allergy to components. Also, anyone whose occupation depends on forceful chewing or who needs to eat heavily in the short term should discuss the functional impact before deciding.<\/div>\n<\/div>\n<div class=\"cta\">\n<h3>Not sure whether your square jaw is muscle-type or fat-type? Rappoel physicians assess by palpation and recommend the right plan!<\/h3>\n<p>\ud83d\udccd 77, Seocho-daero, Seocho-gu, Seoul, South Korea<\/p>\n<p>\ud83d\udd50 Mon\u2013Fri 10:00\u201319:00 \u00b7 Sat 10:00\u201317:00<\/p>\n<p>\ud83d\udcac WeChat Main: rappoelkr | WeChat Backup: rappoelkr2 | LINE: rappoelkr<\/p>\n<p style=\"margin-top:16px;font-size:13px;color:#8B7355;\">Scan to connect with us<\/p>\n<div style=\"display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-top:10px;\">\n<div style=\"text-align:center;\">\n <img decoding=\"async\" src=\"https:\/\/rappoel-clinic.com\/wp-content\/uploads\/2026\/04\/Rappoel\u5fae\u4fe1\u4e8c\u7ef4\u7801\uff08\u4e3b\u53f7\uff09-1.png\" alt=\"WeChat Main QR Code\" style=\"width:120px;height:120px;border-radius:6px;\" \/><\/p>\n<p style=\"font-size:11px;color:#6b5240;margin-top:4px;\">WeChat (Main)<\/p>\n<\/p><\/div>\n<div style=\"text-align:center;\">\n <img decoding=\"async\" src=\"https:\/\/rappoel-clinic.com\/wp-content\/uploads\/2026\/04\/Rappoel\u5fae\u4fe1\u4e8c\u7ef4\u7801\uff08\u5907\u7528\u53f7\uff09-1.png\" alt=\"WeChat Backup QR Code\" style=\"width:120px;height:120px;border-radius:6px;\" \/><\/p>\n<p style=\"font-size:11px;color:#6b5240;margin-top:4px;\">WeChat (Backup)<\/p>\n<\/p><\/div>\n<div style=\"text-align:center;\">\n <img decoding=\"async\" src=\"https:\/\/rappoel-clinic.com\/wp-content\/uploads\/2026\/04\/Line\u4e8c\u7ef4\u7801-1.jpg\" alt=\"LINE QR Code\" style=\"width:120px;height:120px;border-radius:6px;\" \/><\/p>\n<p style=\"font-size:11px;color:#6b5240;margin-top:4px;\">LINE<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n<\/div>\n<p><\/body><br \/>\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Masseter Botox typically weakens the bite within 3-7 days, visibly relaxes the jaw muscle at 2-4 weeks, and reaches its best slimming effect at 4-8 weeks \u2014 the visible change comes from muscle atrophy, which simply takes time. Results last around 4-6 months, and longer for those on a regular treatment cadence as the muscle baseline thins.<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[66],"tags":[],"class_list":["post-2130","post","type-post","status-publish","format-standard","hentry","category-botox-en"],"_links":{"self":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/2130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/comments?post=2130"}],"version-history":[{"count":1,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/2130\/revisions"}],"predecessor-version":[{"id":2132,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/2130\/revisions\/2132"}],"wp:attachment":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/media?parent=2130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/categories?post=2130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/tags?post=2130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}