Non-peptide

PDRN

Also known as

polydeoxyribonucleotide · salmon DNA · PDRN mesotherapy

Community talk. May contain inaccuracies. Not medical advice. Not a protocol. Not for human or animal use.

What it is

Identity	PDRN is a DNA-fragment material discussed for skin hydration, texture and recovery. It is not a peptide or fish genes that change your DNA.
Product differences	Rejuran is a PN product family; HB Plus also contains hyaluronic acid and lidocaine. Skin injections, scalp treatments, microneedling add-ons and serums cannot be treated as one product.

Notes

PDRN is a DNA-fragment material people discuss for skin hydration, texture and recovery. ‘Salmon DNA’ also gets used for Rejuran PN injections and topical cosmetics, which are different products. Reports include smoother-looking skin, painful treatments and little lasting change; the name alone cannot tell you what someone received.

DNA fragments, not a peptide. PDRN means polydeoxyribonucleotide. Community explanations distinguish shorter PDRN fragments from longer PN chains. These materials are discussed for local skin treatment, not as fish genes that change your own DNA. GHK-Cu is a separate copper peptide.

Rejuran is a PN product family. Its manufacturer identifies Rejuran as a PN medical device, with I aimed at thin eye-area skin and S at scar-related concerns. HB Plus includes hyaluronic acid and lidocaine. Those distinctions matter when comparing hydration, pain and treatment amounts. PharmaResearch identifies Rejuran as PN medical device (Official context · Accessed 2026-09-30) · PharmaResearch Rejuran I, S and HB Plus product distinctions (Official context · Accessed 2026-09-30) · PharmaResearch HB Plus ingredients and packaging (Official context · Accessed 2026-09-30)

Skin injections, scalp treatments and serums are separate. Mesotherapy means small injections into the skin. A topical c-PDRN serum, a microneedling add-on and an unidentified PDRN vial are not equivalent to a branded injection product or a routine shot beneath belly fat.

Source context — PharmaResearch identifies Rejuran as PN medical device: Commercial manufacturer origin. Sales, superiority, safety and marketing claims are not effectiveness evidence and are not adopted.

Source context — PharmaResearch Rejuran I, S and HB Plus product distinctions: Commercial manufacturer communication; claimed 53% pain reduction, effect size, safety and dose-dependence not adopted. Does not validate a forum user's product or a universal course.

Source context — PharmaResearch HB Plus ingredients and packaging: Commercial manufacturer description; no ingredient concentrations or ratios supplied. HB in a comment is not automatically authenticated as HB Plus. Storage claim applies to this displayed product, not every PDRN preparation.

What people notice

Skin appearance	Some report smoother texture, softer eye-area lines, hydration or less under-eye darkness. These are skin-quality reports, not reliable filler-like volume or lifting.
Limited or no lasting change	One four-session recipient noticed no long-term improvement. A scar-treatment account reported modest improvement after laser plus Rejuran, without isolating the add-on.
Scalp reports	One topical diary described baby hairs and later density, with continuing shedding and health changes. It does not establish injected PDRN's effect or replacement of minoxidil.

Notes

Texture, fine lines and hydration. One treatment comparison described smoother texture and softer eye-area lines after Rejuran, versus calmer redness and hydration after unspecified PDRN. The writer also had surgery and other procedures; this does not establish which material works better. One person's Rejuran versus unspecified PDRN experience (Personal report · Accessed 2026-09-30)

Under-eye appearance, rather than reliable volume filling. A commenter noticed less darkness after three polynucleotide sessions. Skin quality is the central goal here; claims of plumping do not establish the predictable cheek volume or lifting people expect from a filler. Rejuran sessions: HB cheeks, Healer face, and maintenance accounts (Community discussion · Accessed 2026-09-30)

Lasting improvement is disputed. A four-session recipient noticed no long-term improvement. Others report satisfaction with ongoing treatments. Neither a maintenance calendar nor a topical scalp diary still in progress establishes benefit after stopping. I just got Rejuran: pain, same-person recovery and four-session nonresponse (Community discussion · Accessed 2026-09-30) · Rejuran sessions: HB cheeks, Healer face, and maintenance accounts (Community discussion · Accessed 2026-09-30) · VT scalp cosmetic diary with stress-shedding confounds and dissent (Community discussion · Accessed 2026-09-30)

‘Not a miracle’ also appears in scar-treatment discussion. A HardwareZone writer saw modest improvement after a third session that combined laser with Rejuran; earlier sessions involved other procedures. Their improvement cannot be assigned to the add-on alone. HardwareZone acne-scar discussion: modest change with Rejuran added to laser (Personal report · Accessed 2026-09-30)

Topical scalp: one month in one diary. The Reedle Shot reviewer described baby hairs after one month and better density after two months. Stress-related shedding and other health changes complicate attribution; this is not an onset measurement for injected PDRN. VT scalp cosmetic diary with stress-shedding confounds and dissent (Community discussion · Accessed 2026-09-30)

The scalp diary includes continuing shedding and disagreement. The reviewer described fuller areas at 3.5 months but shedding that only eased around November. Replies questioned natural recovery from stress-related hair loss; the author also mentioned iron supplementation. It cannot prove that PDRN replaces minoxidil or that gains persist after stopping. VT scalp cosmetic diary with stress-shedding confounds and dissent (Community discussion · Accessed 2026-09-30)

Source context — One person's Rejuran versus unspecified PDRN experience: Anonymous self-report; PDRN product, amount and route unspecified. Multiple procedures and surgery confound comparisons. Promotional influence cannot be excluded. No population-wide superiority inference.

Source context — Rejuran sessions: HB cheeks, Healer face, and maintenance accounts: Amounts, formulations and outcomes are unverified reports. HB's component ratio is not supplied. Planned fourth session is not durability evidence. Fillroad is separate; maintenance is not half-life. Repeated statements by one user remain one account.

Source context — I just got Rejuran: pain, same-person recovery and four-session nonresponse: Self-reports, variable products, anesthesia and technique. OP also had Botox and sunspot treatment. TikTok update, collapsed replies and photographs not inspected. Other commenters' volume or two-year durability claims are not adopted.

Source context — VT scalp cosmetic diary with stress-shedding confounds and dissent: Topical multi-ingredient cosmetic, not injected PDRN. Stress-related shedding, iron supplementation and time confound regrowth. Same diary cross-posted to r/Haircare is not corroboration. Author's unsupported growth-phase, permanence and minoxidil claims rejected. Images were not independently measured. Possible commercial influence; coupon discussion present.

Source context — HardwareZone acne-scar discussion: modest change with Rejuran added to laser: Old anonymous account, multi-procedure sequence; PDRN dose unspecified. Planned PDRN is not a completed outcome; TCA breakout not attributed to Rejuran. Thread contains clinic-promotion disputes. No clinic recommendations or procedural instructions adopted.

Doses people talk about

Face-session volumes	2–4 mL full-face talk circulates; 1 cc equals 1 mL. One account used 2 cc HB on cheeks, then three weeks later 4 cc Healer on the face plus a separate 2 cc Fillroad on the neck.
Scalp menu claims	2–4 mL per session with weekly-to-monthly opening schedules appears in clinic-menu discussion, not a measured daily amount or dose-response.
Topical labels	5,000 ppm describes concentration, not an injectable volume. A scalp review's 100dL and 300dL are cosmetic product names, not PDRN milligrams.

Notes

Injection reports use mL per session; 1 cc equals 1 mL. One commenter reported 2 cc HB, described as PN plus HA, on cheeks; three weeks later, 4 cc Healer over the face plus a separate 2 cc Fillroad on the neck. These are different products and areas, not a 6 mL Rejuran dose. Rejuran sessions: HB cheeks, Healer face, and maintenance accounts (Community discussion · Accessed 2026-09-30)

Full-face talk: 2–4 mL, with competing syringe claims. The existing community record also describes about 2 mL for a local zone and three-syringe full-face claims. Arguments that 1 mL cannot cross an ‘activation threshold’ remain technique or marketing claims, not a verified minimum effective amount. Box sizes vary.

Scalp menu talk: 2–4 mL per session. Weekly-to-monthly opening schedules appear in the existing record. These are clinic-menu claims circulating in discussion, not a measured dose-response or a daily amount.

Topical numbers are not injectable doses. The recorded 5,000 ppm c-PDRN example describes concentration, not a face-session volume. A scalp reviewer used the 100dL cosmetic daily and 300dL on wash days, about three times weekly, replacing the 100 that day; those are product names, not PDRN milligrams. VT scalp cosmetic diary with stress-shedding confounds and dissent (Community discussion · Accessed 2026-09-30)

Half-life, onset & duration

Felt onset	One HB cheek account noticed glow at about two weeks; another described texture changes after 2–3 Rejuran sessions. A topical scalp diary first reported baby hairs at one month.
Felt duration	Lasting benefit is disputed. Bumps lasting a day or several days describe recovery, not how long skin improvement lasts.
Half-life	No dependable cosmetic-product value here. The circulated 17-hour plasma comparison is not verified for Rejuran PN, topical PDRN or scalp treatment.

Notes

Skin: about two weeks or several sessions in particular accounts. The cheek-only HB commenter noticed glow at about two weeks. The comparison writer described texture changes after two or three Rejuran sessions. Immediate swollen fullness is a different observation. Rejuran sessions: HB cheeks, Healer face, and maintenance accounts (Community discussion · Accessed 2026-09-30) · One person's Rejuran versus unspecified PDRN experience (Personal report · Accessed 2026-09-30) · I just got Rejuran: pain, same-person recovery and four-session nonresponse (Community discussion · Accessed 2026-09-30)

Bumps: a day or two in one account; longer in other descriptions. The original record describes 24–72 hours of swelling and bumps settling across days 3–7. These are recovery observations, not how long a benefit lasts. One person's Rejuran versus unspecified PDRN experience (Personal report · Accessed 2026-09-30)

No dependable cosmetic-product half-life in these reports. How quickly half the material leaves the body is a separate question from how long skin looks different. Bumps and maintenance intervals cannot measure it. The circulated 17-hour plasma comparison is not a verified value for Rejuran PN, topical PDRN or scalp treatment.

Cycles people discuss

Face series	Three or four sessions 2–4 weeks apart, with 4–12-month maintenance, appears in circulated schedules. A long-term account used treatments every 3–4 months alongside other procedures.
Separate scalp pattern	A clinic-blog menu describes six sessions over about four months: every two weeks for three sessions, then monthly. It is not a proven maintenance requirement.

Notes

Face: three or four sessions, 2–4 weeks apart, in circulated schedules. The existing record gives maintenance at 4–12 months. A separate long-term commenter reported every 3–4 months for eight years, alongside lasers, Botox and subcision; satisfaction does not isolate Rejuran or prove repeat-use safety. Rejuran sessions: HB cheeks, Healer face, and maintenance accounts (Community discussion · Accessed 2026-09-30)

Scalp: a separate six-session menu pattern. The recorded clinic-blog course spans about four months: every two weeks for three sessions, then monthly. It is not interchangeable with a face series, a topical routine or a proven maintenance requirement.

Stacks

Skin procedures	PRP, laser/RF, microneedling, toxin and GHK-Cu appear alongside treatments. Combined procedures make both benefit and irritation harder to assign.
Hair combinations	Minoxidil and microneedling appear in hair stacks; these reports do not isolate PDRN's contribution.

Notes

Aftercare and combined procedures affect the story. Heat, sweat, makeup timing, sun protection and leaving bumps alone recur in the original discussions. PRP, laser, RF, toxin, minoxidil, microneedling and GHK-Cu also appear together. More simultaneous treatments make both benefit and irritation harder to attribute.

+ PRP: Clinic “blood + salmon DNA” menus. [community]

+ Laser / RF: Recovery add-on. [community]

+ GHK-Cu: Copper-peptide vs polynucleotide — two skin-injectable drawers. [community]

Hair: + minoxidil / microneedling. [community]

Scalp growth and recovery after other treatments. Scalp mesotherapy and post-laser add-ons appear in community discussion. They are different goals, often combined with minoxidil, PRP or laser; an improved photo cannot isolate PDRN's contribution.

Watch for

Pain and recovery	Intense injection pain, early swelling, bumps and bruising are reported. One severe-pain account later felt better the same day; that was recovery, not proof of lasting benefit.
Irritation and allergy questions	A serum user reported redness and worse dryness. Fish origin, added ingredients and anesthetics matter separately; the reports do not establish pregnancy or long-term safety.
Unknown injectable products	A cosmetic sale or unidentified vial does not establish injectable identity, sterility or approval.

Notes

Pain can be substantial. An injection recipient described intense pain over 5–8 minutes and early swelling despite numbing. Bruising, infection concerns and fish-origin allergy questions also appear in the original record; a marketed repair ingredient is not a safety assurance. I just got Rejuran: pain, same-person recovery and four-session nonresponse (Community discussion · Accessed 2026-09-30)

Severe pain and quick recovery can belong to the same person. The initially distressed injection poster later said their face felt good at six hours, with swelling for roughly an hour. They also received Botox and sunspot treatment. That follow-up is recovery, not an isolated lasting Rejuran result. I just got Rejuran: pain, same-person recovery and four-session nonresponse (Community discussion · Accessed 2026-09-30)

A serum can irritate too. A topical user reported redness and worse dryness. Replies described different reactions to different formulas; they could not identify PDRN as the cause. Fish-origin, added ingredients and anesthetics matter separately. These discussions do not establish pregnancy, breastfeeding or long-term safety. Topical PDRN irritation and differences between formulas (Community discussion · Accessed 2026-09-30) · PharmaResearch HB Plus ingredients and packaging (Official context · Accessed 2026-09-30)

Product identity and authorization need separate checking. An unidentified vial or cosmetic sale does not establish injectable identity, sterility or approval. The original record flags US injectable-approval concerns. Cosmetic availability and overseas device status do not settle that question.

Source context — Topical PDRN irritation and differences between formulas: No ingredient-controlled test, product authentication or allergy diagnosis. Product recommendations may be promotional. Oil-particle/penetration claims and buying advice are not adopted.

Full notes

What is behind the salmon-DNA name?

DNA fragments, not a peptide. PDRN means polydeoxyribonucleotide. Community explanations distinguish shorter PDRN fragments from longer PN chains. These materials are discussed for local skin treatment, not as fish genes that change your own DNA. GHK-Cu is a separate copper peptide. Community
Rejuran is a PN product family. Its manufacturer identifies Rejuran as a PN medical device, with I aimed at thin eye-area skin and S at scar-related concerns. HB Plus includes hyaluronic acid and lidocaine. Those distinctions matter when comparing hydration, pain and treatment amounts. Official context Official context Official context
Skin injections, scalp treatments and serums are separate. Mesotherapy means small injections into the skin. A topical c-PDRN serum, a microneedling add-on and an unidentified PDRN vial are not equivalent to a branded injection product or a routine shot beneath belly fat. Community

What people hope to improve

Texture, fine lines and hydration. One treatment comparison described smoother texture and softer eye-area lines after Rejuran, versus calmer redness and hydration after unspecified PDRN. The writer also had surgery and other procedures; this does not establish which material works better. Personal report
Under-eye appearance, rather than reliable volume filling. A commenter noticed less darkness after three polynucleotide sessions. Skin quality is the central goal here; claims of plumping do not establish the predictable cheek volume or lifting people expect from a filler. Reddit, r/KoreanBeauty Community
Scalp growth and recovery after other treatments. Scalp mesotherapy and post-laser add-ons appear in community discussion. They are different goals, often combined with minoxidil, PRP or laser; an improved photo cannot isolate PDRN's contribution. Community

Doses people discuss

Injection reports use mL per session; 1 cc equals 1 mL. One commenter reported 2 cc HB, described as PN plus HA, on cheeks; three weeks later, 4 cc Healer over the face plus a separate 2 cc Fillroad on the neck. These are different products and areas, not a 6 mL Rejuran dose. Reddit, r/KoreanBeauty
Full-face talk: 2–4 mL, with competing syringe claims. The existing community record also describes about 2 mL for a local zone and three-syringe full-face claims. Arguments that 1 mL cannot cross an ‘activation threshold’ remain technique or marketing claims, not a verified minimum effective amount. Box sizes vary. Community
Scalp menu talk: 2–4 mL per session. Weekly-to-monthly opening schedules appear in the existing record. These are clinic-menu claims circulating in discussion, not a measured dose-response or a daily amount. Community
Topical numbers are not injectable doses. The recorded 5,000 ppm c-PDRN example describes concentration, not a face-session volume. A scalp reviewer used the 100dL cosmetic daily and 300dL on wash days, about three times weekly, replacing the 100 that day; those are product names, not PDRN milligrams. Community Reddit, r/AsianBeauty

Half-life

No dependable cosmetic-product half-life in these reports. How quickly half the material leaves the body is a separate question from how long skin looks different. Bumps and maintenance intervals cannot measure it. The circulated 17-hour plasma comparison is not a verified value for Rejuran PN, topical PDRN or scalp treatment. Community

Onset: when changes are noticed

Skin: about two weeks or several sessions in particular accounts. The cheek-only HB commenter noticed glow at about two weeks. The comparison writer described texture changes after two or three Rejuran sessions. Immediate swollen fullness is a different observation. Reddit, r/KoreanBeauty Personal report Reddit, r/KoreanBeauty
Topical scalp: one month in one diary. The Reedle Shot reviewer described baby hairs after one month and better density after two months. Stress-related shedding and other health changes complicate attribution; this is not an onset measurement for injected PDRN. Reddit, r/AsianBeauty

Duration: recovery and visible results

Bumps: a day or two in one account; longer in other descriptions. The original record describes 24–72 hours of swelling and bumps settling across days 3–7. These are recovery observations, not how long a benefit lasts. Personal report Community
Lasting improvement is disputed. A four-session recipient noticed no long-term improvement. Others report satisfaction with ongoing treatments. Neither a maintenance calendar nor a topical scalp diary still in progress establishes benefit after stopping. Reddit, r/KoreanBeauty Reddit, r/KoreanBeauty Reddit, r/AsianBeauty

Courses and repeat treatments

Face: three or four sessions, 2–4 weeks apart, in circulated schedules. The existing record gives maintenance at 4–12 months. A separate long-term commenter reported every 3–4 months for eight years, alongside lasers, Botox and subcision; satisfaction does not isolate Rejuran or prove repeat-use safety. Community Reddit, r/KoreanBeauty
Scalp: a separate six-session menu pattern. The recorded clinic-blog course spans about four months: every two weeks for three sessions, then monthly. It is not interchangeable with a face series, a topical routine or a proven maintenance requirement. Community

Pain, irritation and other limits

Pain can be substantial. An injection recipient described intense pain over 5–8 minutes and early swelling despite numbing. Bruising, infection concerns and fish-origin allergy questions also appear in the original record; a marketed repair ingredient is not a safety assurance. Reddit, r/KoreanBeauty Community
A serum can irritate too. A topical user reported redness and worse dryness. Replies described different reactions to different formulas; they could not identify PDRN as the cause. Fish-origin, added ingredients and anesthetics matter separately. These discussions do not establish pregnancy, breastfeeding or long-term safety. Reddit, r/koreanskincare Community Official context
Product identity and authorization need separate checking. An unidentified vial or cosmetic sale does not establish injectable identity, sterility or approval. The original record flags US injectable-approval concerns. Cosmetic availability and overseas device status do not settle that question. Community Community

What the experiences add

Severe pain and quick recovery can belong to the same person. The initially distressed injection poster later said their face felt good at six hours, with swelling for roughly an hour. They also received Botox and sunspot treatment. That follow-up is recovery, not an isolated lasting Rejuran result. Reddit, r/KoreanBeauty
‘Not a miracle’ also appears in scar-treatment discussion. A HardwareZone writer saw modest improvement after a third session that combined laser with Rejuran; earlier sessions involved other procedures. Their improvement cannot be assigned to the add-on alone. Personal report
Microneedling reports mix enthusiasm with downtime. The original discussion includes barrier, glow and acne-calming claims for Curenex-type boosters, alongside ‘not a miracle’ reactions. A three-syringe DIY account described about two days of papules after needling first. That does not establish a method or recommended amount. Community
The scalp diary includes continuing shedding and disagreement. The reviewer described fuller areas at 3.5 months but shedding that only eased around November. Replies questioned natural recovery from stress-related hair loss; the author also mentioned iron supplementation. It cannot prove that PDRN replaces minoxidil or that gains persist after stopping. Reddit, r/AsianBeauty
Aftercare and combined procedures affect the story. Heat, sweat, makeup timing, sun protection and leaving bumps alone recur in the original discussions. PRP, laser, RF, toxin, minoxidil, microneedling and GHK-Cu also appear together. More simultaneous treatments make both benefit and irritation harder to attribute. Community

What the supporting research actually studied

Wound healing is a different clinical question. A randomized trial found better diabetic-foot-ulcer healing with PDRN given into muscle and around ulcers. Its adenosine-receptor explanation concerns repair signaling, not genetic alteration. That trial does not establish facial glow, hair regrowth or topical effectiveness. Official context
Pharmaceutical PDRN is another specific formulation. Mastelli lists Placentex as 5.625 mg PDRN in 3 mL injectable solution. That product concentration is supporting identity context, not a cosmetic community dose or a half-life transferable to Rejuran. Official context