Stretch marks are strip-like lines formed after collagen and elastic fibers in the dermis rupture — they can form during pregnancy when the abdomen expands rapidly, during rapid weight changes, or during adolescent growth spurts. Early stretch marks are red or purple (red-striae phase), then fade to white or silver over time (white-striae phase), accompanied by skin depression and laxity. Stretch marks most commonly appear on the abdomen, thighs, buttocks, and chest. Causes: (1) Excessive skin stretching — rapid abdominal expansion during pregnancy puts excessive tension on the dermis. (2) Collagen and elastic fiber rupture — when tension exceeds fiber limits, collagen and elastic fibers break, creating strip-like depressions. (3) Hormonal influence — elevated cortisol during pregnancy suppresses collagen synthesis, making skin more fragile. (4) Genetics — some people naturally have more fragile collagen fibers and are more prone to stretch marks. Rappoel Dermatology near Gangnam Station, Seoul, uses Rejuran PDRN regenerative injections — PDRN (polydeoxyribonucleotide) extracted from salmon sperm promotes dermal collagen regeneration to repair stretch marks, non-surgically.
Technical Advantages of Rejuran PDRN Stretch Mark Repair
- PDRN dermal regeneration mechanism: PDRN is a DNA fragment extracted from salmon sperm — it binds to adenosine A2A receptors on skin cells, promoting fibroblast proliferation and collagen synthesis, fundamentally repairing ruptured dermal structures — unlike hydration-only injections, PDRN is a ‘regenerative’ treatment
- Rejuran Korean-origin high-concentration advantage: Rejuran is a Korean pharmaceutical PDRN brand — each 2ml contains 14.2mg of high-concentration PDRN with stable concentration and high purity, a reliable choice for stretch mark repair
- Microneedle delivery for deep penetration: Rappoel uses Rejuran with microneedles or a dedicated injector — delivering PDRN directly to the dermis while microneedling stimulates the skin’s own repair mechanisms, dual promotion of collagen regeneration
- Improves lines + skin quality dual effect: After PDRN promotes collagen regeneration, stretch marks become shallower, finer, with blurred borders, while overall skin firmness, elasticity, and texture improve — line improvement and skin quality improvement proceed simultaneously
- Non-surgical, safe, recoverable: Rejuran injection is a non-surgical treatment — only pinholes with 2-3 day recovery, no impact on daily life, suitable for postpartum mothers and those avoiding surgery
Treatment Strategies for Different Stretch Mark Phases
- Red-striae phase (red/purple marks, within 1 year postpartum): Lines are red or purple with active vascular proliferation. Strategy: Rejuran PDRN injections (every 2-4 weeks, 4-5 sessions) + laser treatment (dye or vascular laser to reduce redness) — PDRN repairs collagen + laser fades redness, best results in the red phase
- White-striae phase (white/silver marks): Lines have faded to white with depressed, lax skin. Strategy: Rejuran PDRN injections (every 2-4 weeks, 5-6 sessions) + CO2 fractional laser — PDRN promotes collagen regeneration to fill depressions + fractional laser stimulates remodeling, the white phase requires more intensive treatment
- Abdominal marks + laxity combination type: Stretch marks with abdominal skin laxity. Strategy: Rejuran injections + Thermage FLX abdominal tightening or ultrasound — PDRN repairs lines + thermal energy tightens skin, dual improvement
- Thigh and buttock stretch mark type: Stretch marks on inner thighs and buttocks. Strategy: Rejuran PDRN injections (divided area treatment) + Onda lipolysis if fat accumulation coexists — improving both marks and body contour
- Postpartum comprehensive repair type: Postpartum abdominal stretch marks + skin laxity + pigmentation. Strategy: Rejuran PDRN injections (4-6 session course) + laser for pigmentation + Thermage tightening — triple approach for complete postpartum abdominal repair
Rappoel Rejuran Stretch Mark Repair Treatment Protocol
- Mark assessment and plan design (5 min): Assess stretch mark range, color (red/white phase), depression depth, skin laxity → photograph → establish treatment plan (sessions, intervals, combination treatments)
- Cleansing and anesthesia (5 min): Treatment area cleansing → topical lidocaine cream for 20-30 minutes (abdominal skin is sensitive) → disinfection
- Rejuran injection (15-20 min): 32G ultra-fine needle or microneedle → Rejuran PDRN injected into the dermis (0.5-1ml per area) → cover stretch mark areas in a grid or spot pattern → gentle pressure after injection
- Post-care and guidance (3 min): Cleanse skin → apply repair ointment → instructions (avoid water for 24 hours, 2-3 days for pinhole recovery, avoid high-heat environments and strenuous exercise for 1 week, sunscreen recommended) → schedule next session (2-4 weeks later)
Each Rejuran stretch mark treatment takes about 25 minutes, with a recommended course of 4-6 sessions at 2-4 week intervals — after the course, stretch marks become shallower and finer with firmer, more elastic skin. Located 3 minutes from Gangnam Station Exit 10, with seamless English and Chinese consultation.
Frequently Asked Questions
How many Rejuran sessions do I need for stretch marks? How fast does it work?
Stretch mark repair is a gradual process: Timeline: (1) After the 1st-2nd injection — skin texture improves (smoother, more elastic), line changes still subtle. (2) After the 3rd-4th — lines begin to fade, become finer, with blurred borders. (3) 2-3 months after completing the full 4-6 session course — optimal results: red marks clearly fade, white marks become shallower and finer, skin firmness improves. Factors affecting results: mark age (earlier treatment works better), mark depth, skin metabolism, age. Rappoel recommends a 4-6 session course (every 2-4 weeks), with laser or Thermage combination as needed — combination treatment far outperforms single treatment.
What’s the difference between red-phase and white-phase treatment? Which phase gives the best results?
The golden period for stretch mark treatment is the red phase (within 1 year postpartum, red/purple marks) — vascular proliferation is active and the skin is still in its repair window, making PDRN collagen regeneration most effective. Treatment strategies differ: (1) Red phase — Rejuran PDRN injections (4-5 sessions) + vascular laser to fade redness — aiming to stop progression and promote collagen repair, with possible recovery to near-normal skin. (2) White phase (faded white marks with skin depression) — Rejuran PDRN injections (5-6 sessions) + CO2 fractional laser — white marks are the end state of collagen rupture; the goal is to stimulate collagen regeneration to fill depressions, with results more limited than the red phase but still clearly improved. Recommendation: start as early as possible postpartum for best results.
What’s the difference between Rejuran and fractional laser for stretch marks? How to choose?
They work via different mechanisms: (1) Rejuran PDRN — ‘biological regeneration,’ injecting PDRN to promote fibroblast proliferation and collagen synthesis, internally repairing ruptured dermal structures. No wounds, fast recovery (2-3 days), suitable for all skin tones (no pigmentation risk). (2) CO2 fractional laser — ‘physical remodeling,’ laser micro-columns heat the dermis to stimulate collagen remodeling and contraction while resurfacing the epidermis. Clear results but with recovery (5-7 days redness and crusting), with pigmentation risk in darker skin. Choosing: (1) Red phase, sensitive skin, darker skin → prioritize Rejuran. (2) White phase with clear depressions → Rejuran + fractional laser combination works best — PDRN repairs internally + laser remodels externally. (3) Avoiding recovery → Rejuran alone. Rappoel recommends based on mark phase and skin type.
Is Rejuran safe for stretch marks? How soon after delivery can I start?
Rejuran is a safe regenerative injection — PDRN is a DNA fragment from salmon sperm with high biocompatibility and rare allergic reactions. Safety points: (1) Postpartum timing — recommend starting 3+ months after delivery (hormones stabilized, wounds fully healed); breastfeeding mothers can consult the physician. (2) Injection depth — intradermal, avoiding vessels and nerves. (3) Side effects — pinhole redness resolving in 1-2 days, a few may have mild bruising or temporary swelling. (4) Contraindications — fish protein allergy (PDRN originates from salmon), pregnancy, infection in the treatment area, coagulation disorders, autoimmune disease patients should consult a physician. Rappoel thoroughly reviews medical and allergy history before treatment to ensure safety.
What should I do after Rejuran stretch mark treatment? How do I maintain results?
Post-care: (1) Avoid water for 24 hours (until pinholes close). (2) Avoid makeup and irritating products until full pinhole recovery in 2-3 days. (3) Avoid high-heat environments (sauna, steam, hot baths) and strenuous exercise for 1 week (reducing sweating and inflammation). (4) Avoid massaging the treatment area for 1 week. (5) Use sunscreen — UV accelerates collagen breakdown, affecting repair results. Maintenance recommendations: (1) Complete the full 4-6 session course (quitting midway reduces results). (2) Follow-up 6-12 months after the course, touch-up if needed. (3) Keep skin moisturized — stretch mark skin is drier; moisturizing maintains elasticity. (4) Balanced diet with collagen synthesis nutrients (protein, vitamin C). Rappoel provides complete post-care guidance.
Postpartum stretch marks hurting your confidence? Rappoel Rejuran PDRN regenerative injection — non-surgical stretch mark repair!
📍 77, Seocho-daero, Seocho-gu, Seoul, South Korea
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