Synthetic copper tripeptide complex (copper tripeptide-3)
AHK-Cu is a copper-bound peptide marketed mainly in topical products to promote hair growth and improve skin.
| Class / type | Synthetic copper tripeptide complex (copper tripeptide-3) |
|---|---|
| Category | Sexual, Skin & Aesthetic |
| Status (Jul 2026) | Research use only |
It delivers copper and is reported to stimulate hair follicle cells (including dermal papilla cells) and VEGF-related angiogenesis, supporting follicle activity, while also promoting collagen production and skin remodeling.
Used cosmetically in serums and scalp products for hair growth/thickening and anti-aging skin care; often paired with GHK-Cu in hair formulas.
Reported to support hair follicle activity and hair growth, boost collagen, and improve skin appearance, with a generally well-tolerated topical profile.
Evidence is largely preclinical/cosmetic with limited controlled human trials; potential for skin irritation, and copper peptides can be inactivated by certain other actives. Injectable/systemic use is not established for safety.
Cosmetic users report modest improvements in hair thickness and skin quality over months of topical use; results are described as gradual and variable.
NOT FDA-approved as a drug. AHK-Cu is used cosmetically as a topical ingredient; research-grade powder is labeled research-use-only and not approved for any therapeutic hair-growth claim.