GHK-Cu
GHK-Cu (Glycyl-L-histidyl-L-lysine) is a legendary, naturally occurring copper-binding tripeptide universally recognized as the gold standard in dermal remodeling and anti-aging cosmetics. Functioning as a profound epigenetic modulator, GHK-Cu quite literally reverses the biological age of human skin by upregulating the expression of over 4,000 distinct genes. Administered subcutaneously or topically, it aggressively eradicates wrinkles, heals catastrophic scars, restores hair follicle vascularity, and acts as a massive systemic anti-inflammatory agent.
Quick Stats
Scientific Data
Mechanism of Action
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
- ✓Skin rejuvenation: collagen synthesis, wrinkle reduction, wound healing
- ✓Hair growth stimulation and follicle regeneration
- ✓Anti-inflammatory via TNF-α, IL-6 suppression
- ✓Tissue repair: lung, bone, liver remodeling in animal models
- ✓Neuroprotection via BDNF upregulation
Dosing Protocol
| Typical Dose | 1-3 mg/day (SC) or topical |
| Frequency | 1× daily |
| Half-Life | ~1-2 hours (estimated) |
| Common Vial Sizes | 5 mg, 50 mg |
Dosing Protocols
Injectable Protocol
Topical Application
Body-Weight Dosing Reference
Estimated doses extrapolated from the published research range of 1000–3000 mcg/day (referenced to 70 kg / 154 lb). These are approximations — consult a qualified healthcare provider for personalised guidance.
| Weight | Low Dose | Target Dose | High Dose |
|---|---|---|---|
| 120 lb(54 kg) | 771 mcg | 1543 mcg | 2314 mcg |
| 140 lb(63 kg) | 900 mcg | 1800 mcg | 2700 mcg |
| 160 lb(73 kg) | 1043 mcg | 2086 mcg | 3129 mcg |
| 180 lb(82 kg) | 1171 mcg | 2343 mcg | 3514 mcg |
| 200 lb(91 kg) | 1300 mcg | 2600 mcg | 3900 mcg |
| 220 lb(100 kg) | 1429 mcg | 2857 mcg | 4286 mcg |
| 250 lb(113 kg) | 1614 mcg | 3229 mcg | 4843 mcg |
💉 For exact syringe units based on your vial concentration, use the GHK-Cu Reconstitution Calculator →
Administration
Expected Timeline
Who Is It 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 Example
Safety & Considerations
Naturally occurring human peptide with excellent safety profile. Both injectable and topical formulations are well-established. Do not combine topically with vitamin C or AHAs.
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.
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.
TB-500 (actin regulation) + GHK-Cu (collagen/matrix synthesis) together support comprehensive connective tissue restoration.
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.
Featured In Clinical Protocols
Anti-Aging & Cellular Longevity
Target biological aging mechanisms by optimizing growth hormone, activating telomerase, and altering gene expression toward youthful patterns.
Dermal Rejuvenation & Asthetics
Physically rebuild the dermal extracellular matrix, stimulating vast collagen networks, elastin, and angiogenesis for youthful, glowing skin.
Post-Surgical Accelerated Healing
Dramatically reduce post-operative recovery times, minimize scar tissue formation, and rapidly heal physical incisions and internal trauma.
Dosing Quick Reference
Frequently Asked Questions
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
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