Peptide
GHK (without copper)
Also known as
GHK free base · Free GHK · GHK peptide (no copper) · glycyl-L-histidyl-L-lysine · Gly-His-Lys · GHK tripeptide free form · tripeptide-1 (cosmetic INCI free form) · copper-free GHK · GHK basic · GHK alone
Community talk. May contain inaccuracies. Not medical advice. Not a protocol. Not for human or animal use.
What it is
| Identity | GHK Basic is the glycine-histidine-lysine peptide supplied without copper already attached. Cosmetic tripeptide-1 is the free form. |
|---|---|
| Copper binding | Free GHK can bind copper; that does not establish equal effects or interchangeable amounts with GHK-Cu. |
Notes
GHK without copper, also called GHK Basic, is discussed for skin, recovery and avoiding added copper. Reports include perceived improvement, weak results and adverse symptoms; many involve GHK-Cu or other products, so free-GHK effects remain difficult to separate.
The same three-amino-acid backbone, without copper already attached. GHK means glycine, histidine and lysine. Cosmetic tripeptide-1 is the free peptide; copper tripeptide-1 is GHK-Cu. Palmitoyl tripeptide-1 adds a fatty-acid group and is another distinct ingredient. Cosmetic Ingredient Review — Safety Assessment of Tripeptide-1 and related cosmetic ingredients, final June 2014 report (Official context · Accessed 2026-09-30)
Copper-free describes the supplied form. GHK binds copper, and laboratory work shows complexes involving albumin. That explains the conversion theory, but does not prove identical effects from free GHK and GHK-Cu in people. Bossak-Ahmad et al. — Ternary Cu2+ Complexes of Human Serum Albumin and Glycyl-l-histidyl-l-lysine (Official context · Accessed 2026-09-30)
0.5–2 mg/day SubQ is preserved borrowed GHK-Cu chart language. Older notes also list copper-form maintenance at 1–2 mg per administration, 2–3 times weekly. Neither establishes free-form dose parity; equal milligrams are not equal numbers of molecules.
Source context — Cosmetic Ingredient Review — Safety Assessment of Tripeptide-1 and related cosmetic ingredients, final June 2014 report: Cosmetic-use concentrations and ingredient review, not injected-dose guidance or systemic safety. Related palmitoyl and copper peptides are different identities; their trials cannot establish free-GHK outcomes.
Source context — Bossak-Ahmad et al. — Ternary Cu2+ Complexes of Human Serum Albumin and Glycyl-l-histidyl-l-lysine: Primary chemistry abstract only, not full paper. In-vitro complex formation is not an in-vivo conversion fraction, clinical equivalence, dose, safety or free-GHK half-life.
What people notice
| Skin and recovery | One daily Basic-plus-KPV user noticed an unspecified difference after one vial; older reports include subtle or disappointing changes. |
|---|---|
| Injection comfort | Some describe less stinging with Basic or mixed forms. One mixed-form user reported less pain but quit for insufficient benefit. |
Notes
Skin texture, firmness and recovery are the main hopes. The older discussion links free GHK to copper-peptide skin, hair and wound-remodeling aims. One daily GHK Basic plus KPV user noticed a difference after one vial; the change was unspecified and cannot be assigned to GHK alone. PEPTIDE SKIN ADVICE — GHK Basic plus KPV reply (Personal report · Accessed 2026-09-30)
Weak results should not automatically become a dosing mistake. Older free-form accounts describe subtle or disappointing change, checking identity or switching to GHK-Cu. A newer mixed-form postoperative account instead mentions hunger and libido at three weeks. Surgery, co-use and subjective tracking prevent a form ranking. GHK-CU — high-amount mixed-form postoperative account (Personal report · Accessed 2026-09-30)
Less injection pain is a separate claimed benefit. Some users prefer Basic or mixed forms because GHK-Cu stings. Others want lower added-copper exposure or a cheaper alternative. Those motives do not establish equivalent skin results or better safety. Basic GHK no Copper (Community discussion · Accessed 2026-09-30) · GHK vs GHK Cu (Community discussion · Accessed 2026-09-30) · GHK-Cu vs GHK with copper supplement (Secondhand community claim · Accessed 2026-09-30)
Better comfort can coexist with disappointing results. MESO-Rx's DeafJam says adding 20–25% Basic resolved pain but quit for insufficient benefit. The percentage basis is unstated. This is a mixed-form experience, not a free-only success or failure. GHK CU burns all day - even in a 50ml vial (Personal report · Accessed 2026-09-30)
Source context — PEPTIDE SKIN ADVICE — GHK Basic plus KPV reply: Basic reply gives no amount, vial duration, route or specific measured improvement; KPV co-use prevents attribution. OP's acne concerns GHK-Cu. Absolute search dates and relative rendered dates conflict, so no calendar publication date assigned.
Source context — GHK-CU — high-amount mixed-form postoperative account: Thread asks about SubQ, but this reply does not explicitly confirm its route. Surgery, recovery and both forms confound effects. Planned next few months are not completed follow-up. Zinc recommendation not adopted.
Source context — Basic GHK no Copper: Advice and opinions, not a completed free-only outcome log. Commercial BST purchase context. Copper-binding explanations and safety/equivalence claims unproven.
Source context — GHK vs GHK Cu: Anonymous pain/chemistry opinions. TracyIsMyDad also appears in later wrong-buy thread and is not counted as an independent second user. Injection technique and vial-mixing instructions excluded.
Source context — GHK-Cu vs GHK with copper supplement: Secondhand podcast interpretation, not an inspected audio quotation or clinical comparison. No completed outcome reported in these comments. Commercial podcast context checked separately.
Source context — GHK CU burns all day - even in a 50ml vial: Mixed-form account: 20–25% Basic added, percentage basis unstated. Reduced pain did not mean worthwhile benefit; user quit. Other replies include commercial source affiliation and unsafe mixing advice, not reproduced.
Doses people talk about
| Free-GHK discussion | 2 mg/day injected under the skin appears as advice, not a completed efficacy log. A different person reported a headache after their first 2 mg injection under the skin. |
|---|---|
| Borrowed copper-form charts | 0.5–2 mg/day under the skin is copied GHK-Cu chart language; it does not establish a free-GHK amount or dose equivalence. |
| Mixed-form account | One postoperative user reports 25 mg Basic plus 12 mg GHK-Cu total daily, split across uses; route is unstated. These are separate component amounts. |
| Topical use | Once- or twice-daily skincare use appears in preserved discussion; no universal free-GHK concentration follows from that habit. |
Notes
2 mg/day SubQ appears in a free-GHK reply. Doctordup2 suggests this amount; it is advice, not a completed efficacy log. A different user actually reported a first 2 mg SubQ GHK Basic exposure followed by a headache. Basic GHK no Copper (Community discussion · Accessed 2026-09-30) · GHK-CU Side Effects — free-GHK reply and follow-up (Personal report · Accessed 2026-09-30)
0.5–2 mg/day SubQ is preserved borrowed GHK-Cu chart language. Older notes also list copper-form maintenance at 1–2 mg per administration, 2–3 times weekly. Neither establishes free-form dose parity; equal milligrams are not equal numbers of molecules.
A much higher mixed-form account keeps both components separate. One postoperative poster reports 10 mg Basic plus 6 mg GHK-Cu morning and afternoon, then 5 mg Basic at night: 25 mg Basic and 12 mg Cu-complex daily. Their own route is unstated despite the SubQ thread. GHK-CU — high-amount mixed-form postoperative account (Personal report · Accessed 2026-09-30)
Topical frequency is usually discussed as once or twice daily. That preserved cosmetic habit supplies no universal free-GHK concentration. The older repeated-use author described 1–2 mg daily and up to five uses/day, but left their own per-use amount and route unclear. GhK source? (Without copper) (Personal report · Accessed 2026-09-30)
Source context — Basic GHK no Copper: Advice and opinions, not a completed free-only outcome log. Commercial BST purchase context. Copper-binding explanations and safety/equivalence claims unproven.
Source context — GHK-CU Side Effects — free-GHK reply and follow-up: Single unverified product/self-report with MCAS; mechanism speculation about mast cells not established. Other fatigue/neck-pain accounts in thread do not identify free GHK and are not assigned to it.
Source context — GHK-CU — high-amount mixed-form postoperative account: Thread asks about SubQ, but this reply does not explicitly confirm its route. Surgery, recovery and both forms confound effects. Planned next few months are not completed follow-up. Zinc recommendation not adopted.
Source context — GhK source? (Without copper): One author, changing forms, topical use and zinc. Own route and per-use amounts not specified. Six uses of 2 mg belongs to other people's reports; ten daily uses is a proposed protocol, not the author's completed exposure. Vendor/podcast influence; no human PK.
Half-life, onset & duration
| Felt onset | Free-only skin onset is unknown here. The one-vial Basic-plus-KPV report gives no elapsed time; weeks-long skin timelines largely come from copper-form accounts. |
|---|---|
| Felt duration | No free-GHK-only benefit window is documented; a GHK-Cu change fading during a break cannot supply it. |
| Half-life | No reliable human free-GHK value is established here. Repeated short estimates include rodent GHK-Cu findings. |
Notes
Free-only skin onset remains unknown. One-vial improvement with KPV gives no elapsed time. Older notes mention softer skin at 2–4 weeks, firmness at 4–8 weeks and hair horizons of 8–12 weeks or longer, largely borrowing copper-peptide timelines or confounded topical experiences. PEPTIDE SKIN ADVICE — GHK Basic plus KPV reply (Personal report · Accessed 2026-09-30)
A couple of weeks belongs to a GHK-Cu account. Antique-Ad7290 describes softer, more even skin while using GHK-Cu plus zinc. This reply to a free-GHK question does not establish the free form's onset. Immediate sensations are not proof of remodeling. Anyone taken GHK without the copper? Does it work? (Community discussion · Accessed 2026-09-30)
No free-GHK-only benefit window is documented. Daily dosing or weeks of use do not tell us how long one exposure works. The copper-form skin report describes changes fading around three weeks into a break after six weeks on; no free-form washout comparison follows. GhK source? (Without copper) (Personal report · Accessed 2026-09-30) · Anyone taken GHK without the copper? Does it work? (Community discussion · Accessed 2026-09-30)
No reliable human free-GHK half-life is established here. Older community notes repeat tens of minutes to a few hours, including 2–4-hour rodent GHK-Cu summaries. Those are different forms and populations. A poster's short-half-life justification for frequent use is not a measured concentration-time curve. GhK source? (Without copper) (Personal report · Accessed 2026-09-30)
Source context — PEPTIDE SKIN ADVICE — GHK Basic plus KPV reply: Basic reply gives no amount, vial duration, route or specific measured improvement; KPV co-use prevents attribution. OP's acne concerns GHK-Cu. Absolute search dates and relative rendered dates conflict, so no calendar publication date assigned.
Source context — Anyone taken GHK without the copper? Does it work?: Detailed outcome is explicitly GHK-Cu, not free GHK. Route and amount absent. Question's 3–6 months is hearsay, not an observed onset. Zinc advice does not establish safety.
Source context — GhK source? (Without copper): One author, changing forms, topical use and zinc. Own route and per-use amounts not specified. Six uses of 2 mg belongs to other people's reports; ten daily uses is a proposed protocol, not the author's completed exposure. Vendor/podcast influence; no human PK.
Cycles people discuss
| Borrowed calendars | 8–12 weeks on and 4–6 weeks off, five days on/two off and roughly 30-day blocks come from GHK-Cu templates, not validated free-GHK cycles. |
|---|---|
| Continuous use and breaks | Topical use is discussed as continuous skincare. Claims that Basic needs no cycling and proposals for a couple-week break do not establish long-term safety. |
Notes
Borrowed blocks and continuous use coexist. Preserved GHK-Cu templates include 8–12 weeks on, 4–6 weeks off, 5 days on/2 off and roughly 30-day blocks. Topical free-peptide products are discussed as continuous skincare. None defines a validated free-GHK injection cycle.
No-cycle claims are opinions, not long-term safety findings. One free-GHK reply says copper-free needs no cycling. The older repeated-use author instead considered a couple-week break and a mixed-form trial; their cited 2–3-week high-frequency schedule was not completed as described. Basic GHK no Copper (Community discussion · Accessed 2026-09-30) · GhK source? (Without copper) (Personal report · Accessed 2026-09-30)
Source context — Basic GHK no Copper: Advice and opinions, not a completed free-only outcome log. Commercial BST purchase context. Copper-binding explanations and safety/equivalence claims unproven.
Source context — GhK source? (Without copper): One author, changing forms, topical use and zinc. Own route and per-use amounts not specified. Six uses of 2 mg belongs to other people's reports; ten daily uses is a proposed protocol, not the author's completed exposure. Vendor/podcast influence; no human PK.
Stacks
| KPV and skincare | KPV accompanies one Basic account. Moisturizer, sunscreen, niacinamide and other signal peptides appear in topical routines. |
|---|---|
| GLOW and KLOW distinction | GLOW usually combines GHK-Cu, BPC-157 and TB-500; KLOW adds KPV. Those copper-form blends do not establish a free-GHK combination. |
Notes
Skin texture, firmness and recovery are the main hopes. The older discussion links free GHK to copper-peptide skin, hair and wound-remodeling aims. One daily GHK Basic plus KPV user noticed a difference after one vial; the change was unspecified and cannot be assigned to GHK alone. PEPTIDE SKIN ADVICE — GHK Basic plus KPV reply (Personal report · Accessed 2026-09-30)
Topical routines make attribution difficult. Moisturizer, sunscreen, niacinamide and other signal peptides often accompany GHK skincare. The older author was pleased with some changes but thought the topical product might deserve the credit. Oral copper supplementation is another variable, not a controlled form comparison. GhK source? (Without copper) (Personal report · Accessed 2026-09-30) · GHK-Cu vs GHK with copper supplement (Secondhand community claim · Accessed 2026-09-30)
GLOW and KLOW experiences usually involve the copper complex. GLOW combines GHK-Cu, BPC-157 and TB-500; KLOW adds KPV. Older lore lists 5:1:1 without component order, separately about 1.7 mg GHK-Cu within 2.3 mg total/day. These approximate claims do not establish a free-GHK blend.
Source context — PEPTIDE SKIN ADVICE — GHK Basic plus KPV reply: Basic reply gives no amount, vial duration, route or specific measured improvement; KPV co-use prevents attribution. OP's acne concerns GHK-Cu. Absolute search dates and relative rendered dates conflict, so no calendar publication date assigned.
Source context — GhK source? (Without copper): One author, changing forms, topical use and zinc. Own route and per-use amounts not specified. Six uses of 2 mg belongs to other people's reports; ten daily uses is a proposed protocol, not the author's completed exposure. Vendor/podcast influence; no human PK.
Source context — GHK-Cu vs GHK with copper supplement: Secondhand podcast interpretation, not an inspected audio quotation or clinical comparison. No completed outcome reported in these comments. Commercial podcast context checked separately.
Watch for
| Headache and feeling light | One user reported a mild headache within minutes of first Basic use, only that once. Another felt light after a fifth use. |
|---|---|
| Skin and copper concerns | Preserved notes include irritation, dryness and injection-site redness. Copper-free labeling does not establish zero copper effects or safety in copper-metabolism conditions. |
| Identity and worsening skin | Color cannot verify identity, purity or sterility. GHK-Cu acne reports do not show that Basic treats the reaction or that worsening skin must be endured. |
Notes
Headache and feeling light are actual reports. xbt_ describes a mild headache within minutes of first SubQ Basic use, then says it occurred only once. The repeated-use author felt light after a fifth use and wondered about zinc; neither account proves a mechanism. GHK-CU Side Effects — free-GHK reply and follow-up (Personal report · Accessed 2026-09-30) · GhK source? (Without copper) (Personal report · Accessed 2026-09-30)
Free GHK does not guarantee zero copper biology or zero irritation. Copper binding does not quantify human risk. The older notes retain topical dryness, irritation concerns about serum bases, acids and retinoids, and injection-site redness. Copper-metabolism conditions need clinical assessment; forum zinc advice cannot certify a substitute safe. Bossak-Ahmad et al. — Ternary Cu2+ Complexes of Human Serum Albumin and Glycyl-l-histidyl-l-lysine (Official context · Accessed 2026-09-30)
Copper uglies are not evidence that worsening skin must be endured. That phrase usually concerns GHK-Cu. The inspected acne author describes prolonged cystic worsening; a separate Basic-plus-KPV reply does not show free GHK treats that reaction. Color alone also cannot verify identity, purity or sterility. PEPTIDE SKIN ADVICE — GHK Basic plus KPV reply (Personal report · Accessed 2026-09-30)
Source context — GHK-CU Side Effects — free-GHK reply and follow-up: Single unverified product/self-report with MCAS; mechanism speculation about mast cells not established. Other fatigue/neck-pain accounts in thread do not identify free GHK and are not assigned to it.
Source context — GhK source? (Without copper): One author, changing forms, topical use and zinc. Own route and per-use amounts not specified. Six uses of 2 mg belongs to other people's reports; ten daily uses is a proposed protocol, not the author's completed exposure. Vendor/podcast influence; no human PK.
Source context — Bossak-Ahmad et al. — Ternary Cu2+ Complexes of Human Serum Albumin and Glycyl-l-histidyl-l-lysine: Primary chemistry abstract only, not full paper. In-vitro complex formation is not an in-vivo conversion fraction, clinical equivalence, dose, safety or free-GHK half-life.
Source context — PEPTIDE SKIN ADVICE — GHK Basic plus KPV reply: Basic reply gives no amount, vial duration, route or specific measured improvement; KPV co-use prevents attribution. OP's acne concerns GHK-Cu. Absolute search dates and relative rendered dates conflict, so no calendar publication date assigned.
Full notes
GHK without copper, also called GHK Basic, is discussed for skin, recovery and avoiding added copper. Reports include perceived improvement, weak results and adverse symptoms; many involve GHK-Cu or other products, so free-GHK effects remain difficult to separate.
What GHK without copper means
- The same three-amino-acid backbone, without copper already attached. GHK means glycine, histidine and lysine. Cosmetic tripeptide-1 is the free peptide; copper tripeptide-1 is GHK-Cu. Palmitoyl tripeptide-1 adds a fatty-acid group and is another distinct ingredient. Official context
- Copper-free describes the supplied form. GHK binds copper, and laboratory work shows complexes involving albumin. That explains the conversion theory, but does not prove identical effects from free GHK and GHK-Cu in people. Official context
- Topical cosmetics and injection discussions are different uses. SubQ means injection under the skin. A serum's ingredients and skin exposure cannot be translated into an injected milligram amount. Free-GHK questions also arise after mistaken purchases and worries about copper or the copper-peptide sting. Community Community Reddit r/Biohacking
Why people consider it
- Skin texture, firmness and recovery are the main hopes. The older discussion links free GHK to copper-peptide skin, hair and wound-remodeling aims. One daily GHK Basic plus KPV user noticed a difference after one vial; the change was unspecified and cannot be assigned to GHK alone. Community Personal report
- Less injection pain is a separate claimed benefit. Some users prefer Basic or mixed forms because GHK-Cu stings. Others want lower added-copper exposure or a cheaper alternative. Those motives do not establish equivalent skin results or better safety. Reddit r/Peptidesource Reddit r/Peptidesource Reddit r/Peptides
Doses people discuss
- 2 mg/day SubQ appears in a free-GHK reply. Doctordup2 suggests this amount; it is advice, not a completed efficacy log. A different user actually reported a first 2 mg SubQ GHK Basic exposure followed by a headache. Reddit r/Peptidesource Personal report
- 0.5–2 mg/day SubQ is preserved borrowed GHK-Cu chart language. Older notes also list copper-form maintenance at 1–2 mg per administration, 2–3 times weekly. Neither establishes free-form dose parity; equal milligrams are not equal numbers of molecules. Community
- A much higher mixed-form account keeps both components separate. One postoperative poster reports 10 mg Basic plus 6 mg GHK-Cu morning and afternoon, then 5 mg Basic at night: 25 mg Basic and 12 mg Cu-complex daily. Their own route is unstated despite the SubQ thread. Personal report
- Topical frequency is usually discussed as once or twice daily. That preserved cosmetic habit supplies no universal free-GHK concentration. The older repeated-use author described 1–2 mg daily and up to five uses/day, but left their own per-use amount and route unclear. Community Personal report
Half-life: what the numbers mean
- No reliable human free-GHK half-life is established here. Older community notes repeat tens of minutes to a few hours, including 2–4-hour rodent GHK-Cu summaries. Those are different forms and populations. A poster's short-half-life justification for frequent use is not a measured concentration-time curve. Community Personal report
When changes are noticed
- Free-only skin onset remains unknown. One-vial improvement with KPV gives no elapsed time. Older notes mention softer skin at 2–4 weeks, firmness at 4–8 weeks and hair horizons of 8–12 weeks or longer, largely borrowing copper-peptide timelines or confounded topical experiences. Personal report Community
- A couple of weeks belongs to a GHK-Cu account. Antique-Ad7290 describes softer, more even skin while using GHK-Cu plus zinc. This reply to a free-GHK question does not establish the free form's onset. Immediate sensations are not proof of remodeling. Reddit r/Peptidesource
How long effects last
- No free-GHK-only benefit window is documented. Daily dosing or weeks of use do not tell us how long one exposure works. The copper-form skin report describes changes fading around three weeks into a break after six weeks on; no free-form washout comparison follows. Personal report Reddit r/Peptidesource
Cycles and breaks
- Borrowed blocks and continuous use coexist. Preserved GHK-Cu templates include 8–12 weeks on, 4–6 weeks off, 5 days on/2 off and roughly 30-day blocks. Topical free-peptide products are discussed as continuous skincare. None defines a validated free-GHK injection cycle. Community Community
- No-cycle claims are opinions, not long-term safety findings. One free-GHK reply says copper-free needs no cycling. The older repeated-use author instead considered a couple-week break and a mixed-form trial; their cited 2–3-week high-frequency schedule was not completed as described. Reddit r/Peptidesource Personal report
What to watch for
- Headache and feeling light are actual reports. xbt_ describes a mild headache within minutes of first SubQ Basic use, then says it occurred only once. The repeated-use author felt light after a fifth use and wondered about zinc; neither account proves a mechanism. Personal report Personal report
- Free GHK does not guarantee zero copper biology or zero irritation. Copper binding does not quantify human risk. The older notes retain topical dryness, irritation concerns about serum bases, acids and retinoids, and injection-site redness. Copper-metabolism conditions need clinical assessment; forum zinc advice cannot certify a substitute safe. Official context Community Community
- Copper uglies are not evidence that worsening skin must be endured. That phrase usually concerns GHK-Cu. The inspected acne author describes prolonged cystic worsening; a separate Basic-plus-KPV reply does not show free GHK treats that reaction. Color alone also cannot verify identity, purity or sterility. Personal report Community
From community discussion
- Better comfort can coexist with disappointing results. MESO-Rx's DeafJam says adding 20–25% Basic resolved pain but quit for insufficient benefit. The percentage basis is unstated. This is a mixed-form experience, not a free-only success or failure. Personal report
- Blend ratios and color changes remain unresolved experiments. A Reddit user reports a 1:3 Basic:GHK-Cu mixture turning purple and hesitating to use it; mass/volume basis is unspecified. Replies disagree over supplementing oral copper. Neither color changes nor copper-scavenging theories authenticate a preparation. Reddit r/Biohacking Reddit r/Peptidesource Reddit r/Peptides
- Weak results should not automatically become a dosing mistake. Older free-form accounts describe subtle or disappointing change, checking identity or switching to GHK-Cu. A newer mixed-form postoperative account instead mentions hunger and libido at three weeks. Surgery, co-use and subjective tracking prevent a form ranking. Community Community Personal report
- GLOW and KLOW experiences usually involve the copper complex. GLOW combines GHK-Cu, BPC-157 and TB-500; KLOW adds KPV. Older lore lists 5:1:1 without component order, separately about 1.7 mg GHK-Cu within 2.3 mg total/day. These approximate claims do not establish a free-GHK blend. Community
- Topical routines make attribution difficult. Moisturizer, sunscreen, niacinamide and other signal peptides often accompany GHK skincare. The older author was pleased with some changes but thought the topical product might deserve the credit. Oral copper supplementation is another variable, not a controlled form comparison. Community Personal report Reddit r/Peptides
Separate research context
- Cosmetic concentrations are not injected doses. CIR's historical survey lists leave-on tripeptide-1 at 0.00002–0.001%. This describes finished cosmetics, not an effective injected amount or a GHK-Cu percentage. Official context
- Mouse cognition work used laboratory exposures. Rosenfeld's copper-free study used 7.5 mg/kg into the abdominal cavity (IP) twice daily for five days, totaling 15 mg/kg/day. Dou's earlier mouse observations used GHK at 10 mg/kg five times weekly for three weeks, with route unstated in the inspected passage. Neither supplies a human regimen. Animal context Animal context
