STUDresearch · Non-peptide
PDRN
Also known as
polydeoxyribonucleotide · Rejuran · Rejuran Healer · salmon DNA · polynucleotide PN · PDRN mesotherapy
Community talk. May be wrong. Not medical advice. Not a protocol. Not for human or animal use.
Non-peptide
Some talk
Local
Intradermal / Topical
Skin, hair & tissue remodeling
Local — skin injections / mesotherapy, not a whole-body shot.
What people say
PDRN is DNA-fragment material, not a peptide. This discussion also includes Rejuran Healer, a PN skin booster, and topical products; their formulations, routes and evidence are not interchangeable.
Doses people talk about
Legacy menu talk often calls 2 mL a box and 4 mL two boxes, but packaging and product concentration vary. PN injections, shorter-chain PDRN and topical labels such as 5,000 ppm are not equivalent exposures. No universal full-face activation threshold was established.
How it may feel
Injection reports describe stinging or severe procedural pain, swelling and visible bumps, then variable hydration, glow or texture changes. Some describe benefit after 2–3 sessions; others find little lasting effect. Concurrent laser, Botox and different formulations confound results.
Inspected cheek-only HB report2 cc Rejuran HB
PN/HA product; the commenter described glow after about 2 weeks. It was not a measured PDRN-only response.
Same reporter's later Healer session4 cc Rejuran Healer
A separate full-face session, with 2 cc Fillroad to the neck. Different products and areas prevent equal-volume or isolated-outcome comparisons.
Preserved full-face menu discussion2–4 mL per session
Reported Rejuran/Healer menu volumes; some posts debate whether 1 mL is enough, without a demonstrated universal threshold.
Local-zone discussion~2 mL
Cheeks or under-eye-focused descriptions; product and treatment area need to stay attached to the volume.
Hair mesotherapy discussion2–4 mL per scalp session
Menus describe weekly-to-monthly use. A preserved course describes 6 sessions over 4 months, initially every 2 weeks for 3 sessions, then monthly; hair evidence is thinner than the cosmetic skin discussion.
Half-life & effect duration
- Half-life in the body
- Cosmetic PN / PDRN productsNo single settled estimate
- Felt duration people report
- Immediate experienceProcedural pain and bumps; bumps faded in 1–2 days in one account
- Skin changesTexture changes after 2–3 sessions or glow around 2 weeks
- Other accountNo lasting effect after 4 treatments
Cycles people discuss
Rejuran discussion commonly describes 3–4 sessions spaced 2–4 weeks apart, then maintenance around 4–12 months. Hair reports use different weekly-to-monthly courses. These are reported session calendars, not a universal PDRN regimen.
Timing
Timing is organized around clinic session days and recovery, not a morning systemic pin. Reports mention a 48–72-hour buffer for visible bumps and same-day microneedling sometimes prolonging them; topical use is a different context.
Stacks
Reports pair skin-booster sessions with lasers, microneedling, PRP, or other aesthetic procedures; hair discussions add minoxidil. Those combinations make both glow and bruising harder to attribute.
Access talk
Not FDA-approved as a US aesthetic injectable (2026 searches). Korea MFDS device talk (Rejuran Healer) is not a US filler approval.
Watch for
Product and route mismatch: US topical c-PDRN cosmetics and Korean Rejuran Healer injections are different products, with different routes and regulatory contexts.
Tap a line to jump into the full notes. Research only — may be wrong.
Timing context & sources
Half-life in the body
A cosmetic intradermal PN/PDRN half-life is not established by the reviewed identity sources and experience reports.
PharmaResearch identifies Rejuran as a PN medical device, whereas Mastelli identifies Placentex as PDRN pharmaceutical material. Papules and 4–6-month maintenance are visible recovery or treatment-calendar observations, not parent half-life measurements.
This is a formulation-specific evidence boundary, not a claim that no PDRN PK study exists anywhere. Secondary IM PDRN values are not transferred to Rejuran PN, and visible swelling cannot quantify intact material persistence.
- PharmaResearch — REJURAN is a PN-based medical device (opens in a new tab)3 July 2024 manufacturer release, paragraphs identifying REJURAN as a DOT PN facial-wrinkle medical device and distinguishing the company's DOT PDRN/PN product technologies (text lines 21–25).Manufacturer commercial communication used only for product identity, not promotional safety, superiority, sales-based effectiveness or measured kinetics.
- Mastelli — Placentex PDRN product identity (opens in a new tab)DRUGS / Placentex section: PDRN pharmaceutical active ingredient, 5.625 mg/3 mL injectable solution; separate PN medical devices listed next.Publicly returned page text reviewed; no professional-status confirmation was made. Product description, not a full PK dossier or evidence that intramuscular PDRN kinetics apply to intradermal PN or cosmetics.
Felt duration people report
Procedural pain and days of bumps are more immediately observable than a consistent duration of glow or skin change; benefits and durability vary.
One comparison reported bumps fading in 1–2 days and texture changes after 2–3 Rejuran sessions. Another participant reported no long effect after four treatments. A 2 cc HB cheek report described glow at about 2 weeks, before a different 4 cc Healer session.
These are subjective appearances and recovery times, not elimination measurements. Different formulations, anesthetics, areas and concurrent Botox/laser/HIFU/RF/Fillroad prevent clean attribution; planned sessions are not outcomes.
- Rejuran vs PDRN — one user's different skin-treatment impressions (opens in a new tab)Suspicious-Care5553 OP, Rejuran vs PDRN paragraphs: 2–3 sessions, bumps resolving in 1–2 days, texture/eye-line change versus hydration/redness impressions; adjacent HIFU/RF history also read.No exact PDRN product, amount or route for that comparison and no controlled attribution; other procedures confound results. Small beauty subreddit and clinic discussion may be promotional. Not evidence of one formulation's superiority.
- I just got Rejuran — severe procedural pain and mixed durability (opens in a new tab)lavanderhaze27 OP 30 min after treatment: intense 5–8-min procedural pain, swelling, concurrent Botox/sunspot work; evelyn6073 reply reports 4 treatments without a long effect. OP update-request branch only promises a TikTok update; no isolated outcome is supplied there.Thread includes multiple distinct authors, anesthetic/technique and sourcing advice not adopted. Initial pain is not a long-term result; the four-treatment null-durability report is another participant. Collapsed branches and linked social video were not reviewed.
- Feedback/review on Rejuran Healer after 3 sessions? — amounts, formulations and maintenance reports (opens in a new tab)skiwg comment: 2 cc cheek-only HB, glow after about 2 weeks, then 4 cc Healer full face plus 2 cc Fillroad neck. mabubsonyeo reports treatment every 3–4 months for 8 years with laser/Botox/subcision confounding. VentiKombucha later clarifies a planned fourth session, not a proven maintenance result.Unverified cosmetic products and self-assessment; HB/Healer and body areas differ. Maintenance intervals and plans do not measure tissue residence, elimination half-life or guaranteed benefit.
What people say
- Glow / texture / barrier: Clinic copy and user posts: less crepey, more bounce over a series, not a one-and-done filter. forum
- Under-eye Rejuran I: The SKU for thin skin. Bruising is the tax. forum
- Hair mesotherapy: Scalp PDRN + minox/PRP menus. Diaries are thinner than fin/minox albums. forum
- Post-laser add-on: Recovery/glow stack in med-spa protocols. forum
- Microneedling + “salmon” 2025: r/Microneedling — barrier/glow/acne-calm n=1s next to “not a miracle.” Curenex-class cheap PDRN boosters get named as starters vs Rejuran price. forum
- 3-vial full-face (DIY 2025): r/DIYCosmeticProcedures copied a Korean-doc video — one syringe per cheek + forehead. Papules lasted ~2 days when they needled first. anecdote
- Wound-repair literature exists in dermatology PDRN papers — that is the clinic citation, not a guarantee. trial
Doses people talk about
- Full face (Healer talk): 2 mL (one box) is the menu default; 4 mL (two boxes) is what some technique posts call a real full-face dose. These are legacy menu/box descriptions, not a universal package equivalence. A directly inspected commenter reported 2 cc of Rejuran HB to cheeks, then a separate 4 cc Healer full-face session with 2 cc Fillroad to the neck; PN/HA formulation and treatment area differed. forumanecdote
- Local zone: ~2 mL for cheeks or under-eyes only. forum
- Cadence: 3–4 sessions, 2–4 weeks apart; maintenance 4–12 months. forum
- Hair mesotherapy: 2–4 mL across the scalp per session in those menus, often weekly-to-monthly at first. forum
- Reported volume debate: Some posts call a 1 mL whole-face treatment insufficient and invoke an “activation threshold”; that is a technique/marketing claim, not a demonstrated universal threshold for PDRN or every PN formulation. forum
- 3-box push (2025–26): Some technique posts treat three syringes as a real full-face, not one Healer box. Gray-price talk ~$78/syringe ×3, then 3–4 monthly sessions. forum
- Topical ppm ≠ intradermal mL. A 5,000 ppm c-PDRN ampoule is not a Healer box. forum
- Hair course (clinic blogs): ~6 sessions over ~4 months (every 2 weeks ×3, then monthly) with 2–4 mL/session shows up next to the 3–4 face series. forum
- Framing: Clinic milliliters per session — not a daily peptide IU. forum
How it may feel
- Session day: Grid of papules, redness, sting. “Pillow face” for 24–72 hours is the Rejuran look people post. forum
- Days 3–7: Bumps go down. Makeup usually waits a day. forum
- After 3–4 sessions: The “this is my skin now” window in spa copy. Opened threads include texture/fine-line benefit after 2–3 Rejuran sessions, but also a four-treatment recipient who found no lasting effect. One OP reported extreme injection pain and swelling while also receiving Botox and sunspot treatment; visible follow-up did not supply an isolated Rejuran result. forumanecdote
- Hair: Shed/grow timeline is not minox. People judging at week 2 call it nothing. forum
- Off / skip maintenance: Glow talk fades over months — hence the booster cadence. forum
Around the dose
- Clock: Clinic/intradermal session days, not a morning systemic pin. forum
- After: Aftercare (no heavy heat/sweat immediately) shows up more than gym timing. forum
- Habits: Sunscreen and not picking the treated skin. forum
- Pillow-face buffer: Don’t schedule a photo day for 48–72 hours. Grid papules are the look. forum
- Needling same day: Some 2025 DIY’d MN first and said the bumps lasted longer. anecdote
- Topical vs pin: A salmon-DNA serum is not the session. Intradermal papules are the clinic product. forum
- Not a SubQ peptide pin. Mesotherapy grid, not a belly-fat research vial. forum
Cycles people discuss
- A series, then boosters. Not daily pins. forum
- 3–4 sessions is the starter pack almost every Rejuran page copies. forum
- Hair: Closer to a mesotherapy course than a 5-AR lifestyle drug. forum
- Do not stack five injectables on day one (PDRN + PRP + skin booster + toxin) if you want to know what bruised you. forum
Timing
- Body clock is formulation-specific: The legacy “local depot, not a 17-hour plasma story” wording describes cosmetic-session culture, not measured kinetics. Visible papules after PN/PDRN injections do not measure intact material residence or a human elimination half-life. forum
- Glow timing varies: Reports describe hydration, plumpness or days-to-weeks changes; formulation, swelling, HA-containing products and other procedures complicate attribution. In one inspected report, 2 cc cheek-only Rejuran HB preceded glow at about 2 weeks; a later 4 cc Healer session was a different formulation and also included neck Fillroad. forum
- Maintenance is not half-life: Spa copy commonly describes 4–6-month maintenance. That is a cosmetic-session interval, not measured plasma clearance, tissue residence or guaranteed duration of visible benefit. forum
- No oral PDRN diary culture comparable to the injections. forum
More on what it is
- What it is: Polydeoxyribonucleotide (PDRN) is a DNA-fragment material discussed for skin repair. Rejuran Healer is the K-beauty skin-booster name often used alongside it, but its injectable material is polynucleotide (PN), not interchangeable with shorter-chain PDRN or topical cosmetics. Neither is a peptide; skin-booster use is distinct from conventional volume-filler goals. forum
- Why people talk about it: TikTok/clinic “salmon sperm facial” volume in 2025–26. Hair boards add PDRN mesotherapy next to minox. Peptide catalogs list it beside GHK-Cu because both are injectable skin jobs. forum
- Session math clinics repeat: 3–4 treatments, 2–4 weeks apart, then maintenance every 4–12 months. Full-face talk is often 2–4 mL; 2 mL is one box and some writers call that underdosed for a whole face. forum
- Healer vs I vs S vs HB: Under-eye (I), scar/structure (S), hair/body SKUs — same family, different syringes. forum
- Not PRP, not PN from a random vial. Rejuran is a brand; gray “PDRN 5 mL” is a different identity problem. forum
- PN vs PDRN (2025–26 clinic fight): Rejuran Healer is generally described as longer-chain PN (~20 mg/mL in Korean MFDS device talk). PDRN is the shorter-fragment cousin. TikTok still says “salmon DNA” for both. forumtrial
- US access split: Injectable Rejuran is not FDA-approved for aesthetic use in 2026 public-database searches. Sephora/c-PDRN ampoules are cosmetics, not the box. trialforum
- Not filler: r/KoreanBeauty 2026 — it does not plump or lift like HA filler. Disappointed reviews often wanted volume. forum
- How it works (plain): Fragments are pitched as A2A-adenosine / wound-repair signaling in skin, not as “injecting fish genes into your face.” trial
Stacks
- Solo series first: So you can see bruise vs glow. forum
- + PRP: Clinic “blood + salmon DNA” menus. forum
- + Laser / RF: Recovery add-on. forum
- Hair: + minoxidil / microneedling. forum
- + GHK-Cu: Copper-peptide vs polynucleotide — two skin-injectable drawers. forum
Access talk
- Not FDA-approved as a US aesthetic injectable (2026 searches). Korea MFDS device talk (Rejuran Healer) is not a US filler approval. trialforum
- Topical c-PDRN is cosmetics. Sephora/ampoule “salmon DNA” is not the intradermal box. forum
- Gray “PDRN 5 mL” ≠ Rejuran. Brand SKUs (Healer / I / S / HB) vs random polynucleotide vials. forum
- Not a July 2026 peptide PCAC story. This is a clinic/import/mesotherapy identity problem, not 503A BPC/KPV. forum
Storage notes
- Prefilled clinic syringes / boxes. Fridge per brand insert. forum
- Gray lyophilized “PDRN” is not Rejuran. STUDresearch does not publish a mix chart. forum
Watch for
- Bruising, swelling, grid bumps: Expected 1–3 days, not a surprise. forum
- Infection / injector identity: Any mesotherapy. forum
- Gray PDRN ≠ Rejuran box. forum
- Not a filler for volume. Wrong tool if the job is cheeks. forum
- Hair evidence is thinner than skin-glow marketing. forum
- Product and route mismatch: US topical c-PDRN cosmetics and Korean Rejuran Healer injections are different products, with different routes and regulatory contexts. forumtrial
- Allergy / fish-origin: Trout/salmon DNA source is the caution people with fish allergy actually ask. trial
Evidence mix
Mostly community / anecdote tags
Full: every bullet (trial + community). Use Scan for a faster bro-science read.