Broad Shoulders from Overdeveloped Trapezius? Coretox Shoulder Slimming at Rappoel Seoul \u2014 The Complete Guide<\/title><br \/>\n<meta name=\"description\" content=\"Bulky trapezius muscles make shoulders look wide and the neck appear short \u2014 Coretox selectively relaxes the upper trapezius for a graceful swan-neck silhouette\">\n<link rel=\"alternate\" hreflang=\"en\" href=\"https:\/\/rappoel-clinic.com\/coretox-shoulder-trapezius-slimming-swaneck-seoul-rappoel-en\/\" \/>\n<link rel=\"alternate\" hreflang=\"zh-TW\" href=\"https:\/\/rappoel-clinic.com\/coretox-shoulder-trapezius-slimming-swaneck-seoul-rappoel-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\": \"Broad Shoulders from Overdeveloped Trapezius? Coretox Shoulder Slimming at Rappoel Seoul \u2014 The Complete Guide\", \"description\": \"Bulky trapezius muscles make shoulders look wide and the neck appear short \u2014 Coretox selectively relaxes the upper trapezius for a graceful swan-neck silhouette\", \"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\": []}<\/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\">Coretox Shoulder Slimming Seoul | Trapezius Botox | Rappoel Clinic<\/div>\n<h1>Broad Shoulders from Overdeveloped Trapezius? Coretox Shoulder Slimming at Rappoel Seoul \u2014 The Complete Guide<\/h1>\n<div class=\"sub\">Bulky trapezius muscles make shoulders look wide and the neck appear short \u2014 Coretox selectively relaxes the upper trapezius for a graceful swan-neck silhouette<\/div>\n<\/p><\/div>\n<p>Many women feel self-conscious about their shoulder line in off-shoulder tops \u2014 the neck looks short, the shoulders appear broad, and chronic trapezius tension leads to constant shoulder and neck stiffness. Trapezius hypertrophy is not just an aesthetic concern; it results from muscle use patterns \u2014 prolonged phone use (tech neck), poor sitting posture, and gym compensation can all progressively thicken the trapezius muscle. Coretox botulinum toxin shoulder slimming is the most established non-surgical solution in Korean aesthetic medicine, delivering noticeably more graceful neck and shoulder contours from a single session.<\/p>\n<h2>How Coretox Shoulder Slimming Works<\/h2>\n<p>Coretox (South Korea’s next-generation botulinum toxin type A) is injected into the upper trapezius muscle bundles, where it selectively blocks the neuromuscular junction signaling. The hyperactive muscle stops contracting, its volume gradually reduces, and the shoulder line naturally becomes smoother and more slender. Because the muscle is no longer in a state of constant tension, many patients also report improvement in chronic shoulder and neck stiffness.<\/p>\n<h2>Who Is a Good Candidate?<\/h2>\n<ul>\n<li>Well-developed trapezius muscles making shoulders appear broad in off-shoulder or spaghetti-strap clothing<\/li>\n<li>Visually short neck with poorly defined collarbone line<\/li>\n<li>Chronic shoulder and neck stiffness from prolonged sitting or desk work<\/li>\n<li>Post-exercise trapezius compensatory hypertrophy (e.g., from shoulder presses)<\/li>\n<li>Non-surgical candidates seeking a more elegant swan-neck silhouette<\/li>\n<\/ul>\n<h2>The Rappoel Coretox Shoulder Slimming Procedure<\/h2>\n<ol>\n<li><strong>Consultation:<\/strong>The doctor assesses trapezius size, left-right asymmetry, and muscle tension to determine injection sites and dosage<\/li>\n<li><strong>Site Mapping:<\/strong>With the patient seated upright, the doctor marks injection points on both upper trapezius bundles (4\u20136 points per side)<\/li>\n<li><strong>Injection:<\/strong>Fine-needle precise injection \u2014 the entire procedure takes about 5\u201310 minutes with minimal discomfort<\/li>\n<li><strong>Aftercare:<\/strong>Return to daily activities immediately \u2014 no downtime required<\/li>\n<\/ol>\n<h2>Results Timeline and Duration<\/h2>\n<ul>\n<li><strong>Onset of effect:<\/strong>Shoulder line softening visible at 2\u20134 weeks; peak results at 6\u20138 weeks<\/li>\n<li><strong>Duration per session:<\/strong>Approximately 4\u20136 months<\/li>\n<li><strong>Recommended frequency:<\/strong>Maintenance injections every 5\u20136 months; after 2\u20133 consecutive sessions, the muscle adapts and results last progressively longer<\/li>\n<\/ul>\n<h2>Frequently Asked Questions<\/h2>\n<dl>\n<dt><strong>Q1: Will Coretox shoulder slimming affect daily activities or exercise?<\/strong><\/dt>\n<dd>No. Coretox only relaxes the aesthetic hyper-contraction of the upper trapezius without affecting functional movements such as lifting or sports. Return to normal work and life immediately after the procedure.<\/dd>\n<dt><strong>Q2: Is this the same product used for jawline slimming?<\/strong><\/dt>\n<dd>Both are botulinum toxin, but injection sites, dosage, and point distribution differ. Rappoel uses the same Coretox brand, with different protocols tailored to each treatment area.<\/dd>\n<dt><strong>Q3: How does Coretox slimming differ from losing weight through exercise?<\/strong><\/dt>\n<dd>Exercise-induced fat loss is systemic and cannot selectively target the trapezius. Coretox provides precise, selective relaxation of the upper trapezius bundles. The two are complementary \u2014 maintain good posture through fitness; use Coretox for targeted neck-shoulder line refinement.<\/dd>\n<dt><strong>Q4: How many units are needed per session?<\/strong><\/dt>\n<dd>Dependent on individual trapezius size \u2014 typically 40\u201360 units per side (80\u2013120 units bilateral). The exact dosage is determined during the doctor’s consultation.<\/dd>\n<dt><strong>Q5: What are the side effects of Coretox shoulder slimming?<\/strong><\/dt>\n<dd>Mild redness or small bruises at injection sites typically resolve within 1\u20133 days. A small minority experience temporary mild weakness when raising arms \u2014 this resolves naturally within 1\u20132 weeks.<\/dd>\n<dt><strong>Q6: Can I exercise after Coretox shoulder treatment?<\/strong><\/dt>\n<dd>Avoid intense upper-body exercise for 24 hours post-injection; normal exercise can resume thereafter. We recommend avoiding high-intensity trapezius-focused weight training for 2 weeks post-treatment.<\/dd>\n<\/dl>\n<h2>Clinic Information<\/h2>\n<ul>\n<li>\ud83d\udccd Address: 5F, 77 Seocho-daero, Seocho-gu, Seoul<\/li>\n<li>\ud83d\ude87 Access: Gangnam Station Exit 10, 3-minute walk (Seoul Metro Line 2)<\/li>\n<li>\ud83d\udd50 Hours: Mon\u2013Fri 10:00\u201319:00 | Sat 10:00\u201317:00<\/li>\n<li>\ud83d\udcac Booking: WeChat rappoelkr | Line rappoelkr<\/li>\n<\/ul>\n<div class=\"cta\">\n<h3>Contact Rappoel Dermatology Clinic<\/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>Bulky trapezius muscles make shoulders look wide and the neck appear short \u2014 Coretox selectively relaxes the upper trapezius for a graceful swan-neck silhouette<\/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-1120","post","type-post","status-publish","format-standard","hentry","category-botox-en"],"_links":{"self":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/1120","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=1120"}],"version-history":[{"count":1,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/1120\/revisions"}],"predecessor-version":[{"id":1122,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/1120\/revisions\/1122"}],"wp:attachment":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/media?parent=1120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/categories?post=1120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/tags?post=1120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":1120,"date":"2026-06-05T15:13:46","date_gmt":"2026-06-05T06:13:46","guid":{"rendered":"https:\/\/rappoel-clinic.com\/coretox-shoulder-trapezius-slimming-swaneck-seoul-rappoel-en\/"},"modified":"2026-06-05T15:13:49","modified_gmt":"2026-06-05T06:13:49","slug":"coretox-shoulder-trapezius-slimming-swaneck-seoul-rappoel-en","status":"publish","type":"post","link":"https:\/\/rappoel-clinic.com\/en\/coretox-shoulder-trapezius-slimming-swaneck-seoul-rappoel-en\/","title":{"rendered":"Broad Shoulders from Overdeveloped Trapezius? Coretox Shoulder Slimming at Rappoel Seoul \u2014 The Complete Guide"},"content":{"rendered":"

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\nBroad Shoulders from Overdeveloped Trapezius? Coretox Shoulder Slimming at Rappoel Seoul \u2014 The Complete Guide<\/title><br \/>\n<meta name=\"description\" content=\"Bulky trapezius muscles make shoulders look wide and the neck appear short \u2014 Coretox selectively relaxes the upper trapezius for a graceful swan-neck silhouette\">\n<link rel=\"alternate\" hreflang=\"en\" href=\"https:\/\/rappoel-clinic.com\/coretox-shoulder-trapezius-slimming-swaneck-seoul-rappoel-en\/\" \/>\n<link rel=\"alternate\" hreflang=\"zh-TW\" href=\"https:\/\/rappoel-clinic.com\/coretox-shoulder-trapezius-slimming-swaneck-seoul-rappoel-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\": \"Broad Shoulders from Overdeveloped Trapezius? Coretox Shoulder Slimming at Rappoel Seoul \u2014 The Complete Guide\", \"description\": \"Bulky trapezius muscles make shoulders look wide and the neck appear short \u2014 Coretox selectively relaxes the upper trapezius for a graceful swan-neck silhouette\", \"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\": []}<\/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\">Coretox Shoulder Slimming Seoul | Trapezius Botox | Rappoel Clinic<\/div>\n<h1>Broad Shoulders from Overdeveloped Trapezius? Coretox Shoulder Slimming at Rappoel Seoul \u2014 The Complete Guide<\/h1>\n<div class=\"sub\">Bulky trapezius muscles make shoulders look wide and the neck appear short \u2014 Coretox selectively relaxes the upper trapezius for a graceful swan-neck silhouette<\/div>\n<\/p><\/div>\n<p>Many women feel self-conscious about their shoulder line in off-shoulder tops \u2014 the neck looks short, the shoulders appear broad, and chronic trapezius tension leads to constant shoulder and neck stiffness. Trapezius hypertrophy is not just an aesthetic concern; it results from muscle use patterns \u2014 prolonged phone use (tech neck), poor sitting posture, and gym compensation can all progressively thicken the trapezius muscle. Coretox botulinum toxin shoulder slimming is the most established non-surgical solution in Korean aesthetic medicine, delivering noticeably more graceful neck and shoulder contours from a single session.<\/p>\n<h2>How Coretox Shoulder Slimming Works<\/h2>\n<p>Coretox (South Korea’s next-generation botulinum toxin type A) is injected into the upper trapezius muscle bundles, where it selectively blocks the neuromuscular junction signaling. The hyperactive muscle stops contracting, its volume gradually reduces, and the shoulder line naturally becomes smoother and more slender. Because the muscle is no longer in a state of constant tension, many patients also report improvement in chronic shoulder and neck stiffness.<\/p>\n<h2>Who Is a Good Candidate?<\/h2>\n<ul>\n<li>Well-developed trapezius muscles making shoulders appear broad in off-shoulder or spaghetti-strap clothing<\/li>\n<li>Visually short neck with poorly defined collarbone line<\/li>\n<li>Chronic shoulder and neck stiffness from prolonged sitting or desk work<\/li>\n<li>Post-exercise trapezius compensatory hypertrophy (e.g., from shoulder presses)<\/li>\n<li>Non-surgical candidates seeking a more elegant swan-neck silhouette<\/li>\n<\/ul>\n<h2>The Rappoel Coretox Shoulder Slimming Procedure<\/h2>\n<ol>\n<li><strong>Consultation:<\/strong>The doctor assesses trapezius size, left-right asymmetry, and muscle tension to determine injection sites and dosage<\/li>\n<li><strong>Site Mapping:<\/strong>With the patient seated upright, the doctor marks injection points on both upper trapezius bundles (4\u20136 points per side)<\/li>\n<li><strong>Injection:<\/strong>Fine-needle precise injection \u2014 the entire procedure takes about 5\u201310 minutes with minimal discomfort<\/li>\n<li><strong>Aftercare:<\/strong>Return to daily activities immediately \u2014 no downtime required<\/li>\n<\/ol>\n<h2>Results Timeline and Duration<\/h2>\n<ul>\n<li><strong>Onset of effect:<\/strong>Shoulder line softening visible at 2\u20134 weeks; peak results at 6\u20138 weeks<\/li>\n<li><strong>Duration per session:<\/strong>Approximately 4\u20136 months<\/li>\n<li><strong>Recommended frequency:<\/strong>Maintenance injections every 5\u20136 months; after 2\u20133 consecutive sessions, the muscle adapts and results last progressively longer<\/li>\n<\/ul>\n<h2>Frequently Asked Questions<\/h2>\n<dl>\n<dt><strong>Q1: Will Coretox shoulder slimming affect daily activities or exercise?<\/strong><\/dt>\n<dd>No. Coretox only relaxes the aesthetic hyper-contraction of the upper trapezius without affecting functional movements such as lifting or sports. Return to normal work and life immediately after the procedure.<\/dd>\n<dt><strong>Q2: Is this the same product used for jawline slimming?<\/strong><\/dt>\n<dd>Both are botulinum toxin, but injection sites, dosage, and point distribution differ. Rappoel uses the same Coretox brand, with different protocols tailored to each treatment area.<\/dd>\n<dt><strong>Q3: How does Coretox slimming differ from losing weight through exercise?<\/strong><\/dt>\n<dd>Exercise-induced fat loss is systemic and cannot selectively target the trapezius. Coretox provides precise, selective relaxation of the upper trapezius bundles. The two are complementary \u2014 maintain good posture through fitness; use Coretox for targeted neck-shoulder line refinement.<\/dd>\n<dt><strong>Q4: How many units are needed per session?<\/strong><\/dt>\n<dd>Dependent on individual trapezius size \u2014 typically 40\u201360 units per side (80\u2013120 units bilateral). The exact dosage is determined during the doctor’s consultation.<\/dd>\n<dt><strong>Q5: What are the side effects of Coretox shoulder slimming?<\/strong><\/dt>\n<dd>Mild redness or small bruises at injection sites typically resolve within 1\u20133 days. A small minority experience temporary mild weakness when raising arms \u2014 this resolves naturally within 1\u20132 weeks.<\/dd>\n<dt><strong>Q6: Can I exercise after Coretox shoulder treatment?<\/strong><\/dt>\n<dd>Avoid intense upper-body exercise for 24 hours post-injection; normal exercise can resume thereafter. We recommend avoiding high-intensity trapezius-focused weight training for 2 weeks post-treatment.<\/dd>\n<\/dl>\n<h2>Clinic Information<\/h2>\n<ul>\n<li>\ud83d\udccd Address: 5F, 77 Seocho-daero, Seocho-gu, Seoul<\/li>\n<li>\ud83d\ude87 Access: Gangnam Station Exit 10, 3-minute walk (Seoul Metro Line 2)<\/li>\n<li>\ud83d\udd50 Hours: Mon\u2013Fri 10:00\u201319:00 | Sat 10:00\u201317:00<\/li>\n<li>\ud83d\udcac Booking: WeChat rappoelkr | Line rappoelkr<\/li>\n<\/ul>\n<div class=\"cta\">\n<h3>Contact Rappoel Dermatology Clinic<\/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>Bulky trapezius muscles make shoulders look wide and the neck appear short \u2014 Coretox selectively relaxes the upper trapezius for a graceful swan-neck silhouette<\/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-1120","post","type-post","status-publish","format-standard","hentry","category-botox-en"],"_links":{"self":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/1120","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=1120"}],"version-history":[{"count":1,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/1120\/revisions"}],"predecessor-version":[{"id":1122,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/posts\/1120\/revisions\/1122"}],"wp:attachment":[{"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/media?parent=1120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/categories?post=1120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rappoel-clinic.com\/en\/wp-json\/wp\/v2\/tags?post=1120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}