Copper peptide · Topical / subcutaneous · Compounded 503A
GHK-Cu: the copper tripeptide for skin, hair, and tissue remodeling.
GHK-Cu (glycyl-L-histidyl-L-lysine bound to copper) is a naturally occurring tripeptide-copper complex found in human plasma. Plasma levels decline ~60% by age 60. It is one of the most studied peptides for skin remodeling, hair follicle support, and wound healing — with decades of dermatology and biochemistry literature.
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What GHK-Cu is
GHK-Cu is a 3-amino-acid peptide (glycyl-L-histidyl-L-lysine) that naturally binds copper(II) at high affinity. The complex was discovered by Loren Pickart in 1973 in human plasma as a factor that restored youthful function to liver tissue in vitro.
Plasma levels are highest in childhood (~200 ng/mL) and decline progressively with age. The decline tracks with reduced wound healing, thinner skin, and slower tissue repair seen with normal aging.
It is widely available in cosmetic skincare (topical) and is also compounded as a sterile subcutaneous preparation by 503A pharmacies for systemic remodeling and hair-follicle support.
How it works
GHK-Cu acts as a copper-delivery vehicle to cells while simultaneously activating multiple regenerative gene programs. Whole-transcriptome studies show it modulates expression of >4,000 human genes — most toward a younger expression pattern.
It stimulates fibroblasts to produce collagen, elastin, and glycosaminoglycans; activates antioxidant enzymes (SOD); and accelerates angiogenesis at wound sites.
In hair follicles, GHK-Cu prolongs anagen (the growth phase) and enhances dermal-papilla cell signaling — the basis for its use in androgenetic alopecia and post-procedure scalp recovery.
What patients use it for
Skin remodeling and photoaging
Topical GHK-Cu has Phase 2-level dermatology data for improving fine lines, skin thickness, and elasticity in photoaged facial skin.
Wound healing
Accelerates closure of chronic wounds, including diabetic and venous leg ulcers, in clinical studies — likely via combined angiogenesis, collagen synthesis, and antioxidant effects.
Hair follicle support
Prolongs the anagen phase, supports dermal-papilla function, and is widely used as an adjunct to PRP and minoxidil in androgenetic alopecia protocols.
Systemic anti-inflammatory and antioxidant signal
In vitro and animal data show broad anti-inflammatory and DNA-repair effects — the basis for emerging interest in systemic compounded GHK-Cu use.
Evidence summary
Pickart L, Vasquez-Soltero JM, Margolina A (Biomed Res Int, 2015) reviewed >40 years of GHK-Cu literature across wound healing, skin, hair, and gene regulation.
Leyden J et al. and multiple controlled topical trials demonstrate measurable improvements in skin density, fine lines, and elasticity over 12 weeks of cosmetic use.
Hostynek JJ et al. (Toxicol Appl Pharmacol, 2010): characterizes skin penetration of GHK-Cu, supporting topical clinical relevance.
Dosing and clinical context
General clinical context only. Kindr Health physicians determine the appropriate dose and protocol for each patient based on history and labs. This is not a prescription or dosing recommendation.
Topical (cosmetic): 0.1–2% GHK-Cu serum or cream, applied 1–2× daily. Most studied dermatologic format.
Subcutaneous (compounded 503A): typical protocols use 1–2 mg subcutaneously 3–5× weekly, often as part of an aesthetic or recovery stack. Avoid co-injecting with vitamin C, which inactivates copper peptides.
For scalp/hair use: topical microneedling delivery or scalp injections by a trained clinician — frequently combined with PRP or minoxidil.
Safety and contraindications
Topical GHK-Cu has an excellent dermatologic safety record across decades of cosmetic use.
Subcutaneous GHK-Cu is well tolerated in clinical experience; injection-site irritation and rare transient flushing are the most common reports.
Avoid in Wilson disease or any condition involving copper overload. Avoid mixing with ascorbic acid (vitamin C) at the same site.
Not FDA-approved as a finished drug product. Subcutaneous use is via compounding 503A pharmacies under physician supervision.
Who it's typically considered for
- Adults pursuing skin remodeling, fine-line improvement, or post-procedure recovery (laser, microneedling)
- Patients with chronic wound healing challenges (in coordination with wound-care specialist)
- Patients with early androgenetic alopecia, often as part of a combined protocol
- Patients seeking systemic regenerative support with a long dermatologic safety record
Frequently asked questions
Is GHK-Cu the same as a copper IUD or oral copper?
No. GHK-Cu is a peptide-bound copper complex that delivers copper to specific cellular targets and triggers regenerative gene programs. The complex is the active unit; free copper or oral copper does not reproduce its effects.
Topical vs injectable — which works better?
For skin surface remodeling, topical is well established and convenient. For systemic effects (hair, wound healing, broader anti-inflammatory action), compounded subcutaneous delivery is preferred.
Can I use GHK-Cu with vitamin C serum?
Not at the same time or site. Ascorbic acid reduces copper(II) to copper(I) and destabilizes the peptide-copper complex. Alternate use — copper peptide morning, vitamin C evening (or vice versa).
Does GHK-Cu regrow hair?
It is a supportive therapy, not a primary regrowth agent like finasteride or minoxidil. Best used as an adjunct in a comprehensive hair protocol.
Is GHK-Cu safe in pregnancy?
There is no clinical safety data in pregnancy. Topical cosmetic exposure is likely low risk, but injectable use should be avoided in pregnancy and breastfeeding.
Will it turn my skin blue or green?
No. The copper is bound stoichiometrically to the peptide at low concentration. Discoloration is not a clinical concern at typical cosmetic or compounded doses.
How quickly does it work?
Topical: visible improvements in skin texture and tone typically over 8–12 weeks. Wound healing and post-procedure recovery effects emerge faster — within days to weeks.
Is GHK-Cu banned in sports?
GHK-Cu itself is not specifically prohibited by WADA, but topical cosmetic use and injectable use carry different regulatory contexts. Tested athletes should confirm with their governing body.
Sources
- Pickart L, Vasquez-Soltero JM, Margolina A. GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration. Biomed Res Int (2015). — pubmed.ncbi.nlm.nih.gov/26236725
- Pickart L. The human tri-peptide GHK and tissue remodeling. J Biomater Sci Polym Ed (2008). — pubmed.ncbi.nlm.nih.gov/18534104
- Hostynek JJ et al. Human stratum corneum penetration by copper. Toxicol Appl Pharmacol (2010). — pubmed.ncbi.nlm.nih.gov/20381512
- Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide. Int J Mol Sci (2018). — pubmed.ncbi.nlm.nih.gov/30049996
Considering GHK-Cu?
A Kindr Health physician reviews every longevity intake — peptides are prescribed only when medically indicated based on your history and labs. There is no charge for the initial review.
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Medically reviewed by Kindr Health Clinical Team
Kindr Health Inc. — Editorial & Clinical Team (physician-supervised)
NPI 1609792902 · Last reviewed: July 3, 2026
Last reviewed July 3, 2026. Compounded medications are prepared by FDA-registered 503A pharmacies and are not FDA-approved drug products. Prescriptions require a clinical evaluation; a Kindr Health physician determines eligibility. Not for use in pregnancy. This page provides educational information and is not medical advice.