GHK-Cu
Copper peptide · Glycyl-L-histidyl-L-lysine:copper(II)
Gly-His-Lys copper complex. Pickart dermal/matrikine literature and topical cosmetics are the honest file. “4000 genes / reverse biological age” is marketing. Injectable research vials are a different copper exposure than a cream.
Use-case scores
0–10 against the evidence we have, not a gym ranking. Hidden domains do not apply here.
- Skin / cosmetic5/10
Pickart literature and topical cosmetic use are real. Gene-count marketing (“4000 genes”) is not a wrinkle RCT. Multi-lab dermal work, haircut for injectable hype: 5.
Compound card
- Sequence
- GHK·Cu2+
- Class
- Copper-binding matricryptic tripeptide (cosmetic + research injectable)
- Formula
- C14H24CuN6O4
- Status
- Not FDA-approved · research use
How it works
GHK-Cu (Glycyl-L-histidyl-L-lysine:copper(II)) is a naturally occurring copper tripeptide found in human plasma, saliva, and urine. Plasma levels decline significantly with age - from ~200 ng/mL at age 20 to ~80 ng/mL by age 60. GHK-Cu has broad biological activities: it stimulates collagen synthesis (Types I and III), glycosaminoglycan production (chondroitin sulfate, dermatan sulfate), and decorin synthesis.
GHK-Cu is unique in being effective both topically and systemically. It promotes wound healing, skin remodeling, and hair growth by enlarging hair follicles and extending the anagen (growth) phase. Studies show similar efficacy to minoxidil 5% for stimulating hair growth, with additional skin-quality benefits.
Source: PMID: 18492131
Background & History
GHK-Cu (Glycyl-L-Histidyl-L-Lysine:copper) was discovered by Loren Pickart in 1973 while investigating why liver cells of aged humans behaved differently from young plasma. He isolated GHK as the causative factor in youthful plasma that reprogrammed aged cells. The copper complex GHK-Cu is found naturally in human plasma, saliva, and urine, declining with age. It is one of the most pleiotropic peptides known - activating over 4,000 genes - and has been called a "master skin repair signal." Topical cosmetic use is widespread; injectable research use is growing.
Research Use Cases
- ✓Identity: copper tripeptide vs GHK Basic vs topical vs SubQ
- ✓Why “4000 genes” is not a wrinkle RCT
- ✓Not Botox and not a telomere drug
Dosing
| Phase | Dose | Frequency | Notes |
|---|---|---|---|
| Injectable Protocol | 1 - 3 mg | Daily (SC) | For systemic tissue repair, wound healing, and anti-aging. Rotate injection sites. |
| Topical Application | 0.01 - 0.1% concentration | Once or twice daily (topical) | Widely used in cosmetic serums. Do not combine with vitamin C or AHAs in topical use. |
Administration
GHK-Cu: Topical serum / cream vs Injectable research vial
- This is how most people actually buy GHK-Cu.
- No syringe. Blue color is the complex, not a potency assay by eye.
- “4000 genes / reverse biological age” is marketing.
- Topical cosmetic trials are not an injectable wound-drug NDA.
- Vial math is checkable when the bottle is lyophilized GHK-Cu.
- Separates systemic research use from cosmetic SKUs.
- Injectable lots are mostly preclinical plus PIP. Not a reconstruction NDA.
- Copper exposure is real. This is not copper-free GHK Basic (separate leaf).
Timeline
Who it is for
Skin Anti-Aging / Collagen
HighOne of the most studied cosmetic peptides. Direct collagen I/III synthesis and wound healing.
Hair Growth
ModerateEnlarges follicles and extends anagen phase. Studies show efficacy comparable to minoxidil 5%.
Reconstitution
| Vial | Water | Concentration | Example dose |
|---|---|---|---|
| 50 mg lyophilized | 5 mL BAC | 10 mg/mL | 1 mg on 50 mg / 5 mL (10 mg/mL) = 0.10 mL = 10 units on a U-100. Blue solution is expected. |
Change vial size or water volume? Open the reconstitution calculator.
Safety & Considerations
Copper tripeptide. Injectable lots are mostly preclinical plus PIP. Topical cosmetic trials exist. Do not combine topically with vitamin C or AHAs. Not a reconstruction NDA.
Regulatory & Legal Status
Not currently on the WADA 2026 Prohibited List. Policies may change - verify before competition.
Research Chemical
US Compounding: Not eligible / not available
⚠️ This information is for educational purposes only and may not reflect the most current regulatory updates. Always verify with official FDA, WADA, and jurisdiction-specific sources before use.
Limits of current evidence
- Most gene-expression work is in vitro / explant. Do not treat that as a human aging trial.
- Copper load is a real constraint on high-mg daily SubQ folklore.
- GHK Basic (copper-free) is a different SKU.
Verdict
GHK-Cu is Gly-His-Lys with copper. Topical cosmetic use is the honest mass-market story. Injectable research vials are a different exposure. It is not a telomere drug and not a Botox.
Interactions & Contraindications
Topical formulations: minimal systemic absorption - extremely safe. Injectable: copper accumulation possible with excessive doses (keep to research protocols). Do not use concurrently with copper chelators (e.g., penicillamine). Very favorable safety profile at therapeutic doses.
Synergies & Common Stacks
BPC-157 drives angiogenesis and growth factor expression; GHK-Cu amplifies collagen synthesis and dermal matrix remodeling. Complementary wound healing and skin repair synergy.
Actin-fragment marketing plus copper-tripeptide marketing. Complementary labels are not connective-tissue restoration and not a combo trial.
GHK-Cu vs. BPC-157
Canonical comparison: GHK-Cu vs BPC-157
| Attribute | GHK-Cu | BPC-157 |
|---|---|---|
| Mechanism | Copper-peptide signaling + collagen synthesis | VEGF/FGF angiogenesis + NO pathway |
| Admin Route | Topical (primary), injectable | Injectable (primary), oral (gut) |
| Best For | Skin aging, wound healing, hair, topical collagen | Tendon, ligament, gut, systemic injury healing |
| Evidence Quality | Limited human data (mostly in-vitro) | Animal models (robust preclinical) |
| Availability | OTC creams + injectable research grade | Injectable or oral research grade |
Verdict: GHK-Cu excels in topical applications for skin, hair, and superficial wound healing. BPC-157 is the preferred option for deep tissue, joint, and GI injury repair. Many longevity protocols combine both.
Appears in goal guides
Goal guides are maps, not clinic protocols. A mention here is not a treatment plan.
Anti-Aging & Cellular Longevity
Educational map of GH secretagogues, pineal cytogens, and dermal peptides used in longevity folklore. Telomerase and “youthful gene expression” are not a US anti-aging indication.
Dermal Rejuvenation & Aesthetics
GHK-Cu and related dermal peptides. Cosmetic collagen language is not a reconstruction surgery.
Post-Surgical Accelerated Healing
BPC-157, TB-500, and GHK-Cu as they show up next to surgery folklore. Not a substitute for surgical aftercare and not a proven scar-erasure protocol.
Ultimate Athletic Performance
Muscle and vascular cytomax plus BPC-157/TB-500 and GH secretagogues as they show up in athletic folklore. Injectable repair peptides are WADA-prohibited. This is not a doping pass.
Anti-Aging Longevity Stack
Golden Triangle (Endoluten, Vladonix, Bonomarlot) plus Epitalon and GHK-Cu, with FOXO4-DRI and MOTS-c as experimental add-ons.
Frequently Asked Questions
Topical or injectable?▼
Can GHK-Cu be used topically or only by injection?▼
Does GHK-Cu help with hair growth?▼
References
- Pickart L et al. “"GHK-Cu and skin rejuvenation".” Journal of Aging Science (2015). PMID: 26844265
- Pickart L, Margolina A. “GHK peptide as a natural modulator of multiple cellular pathways in skin biology.” Biomed Res Int (2015). PMID: 26236730
- Pickart L. “The human tripeptide GHK-Cu in prevention and treatment of skin aging.” Int J Cosmet Sci (2012). PMID: 22486774
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