Healing / repair
AHK-Cu
Cosmetic (topical)Copper tripeptide (AHK) · Copper peptide
Copper peptide marketed mainly for hair growth.
What it is
A copper-binding tripeptide (Ala-His-Lys) used in cosmetics, promoted particularly for hair follicle support.
How it works
Delivers copper and signals angiogenesis/growth-factor activity around hair follicles and skin.
Studied for
Hair growth and skin (topical cosmetic claims).
Regulatory status
Cosmetic ingredient (not a drug).
Safety
Generally well tolerated topically; efficacy modestly supported.
What the community reports about AHK-Cu
Aggregated from real community discussions across social platforms and forums. Anecdotal and self-reported — not causal, not medical advice.
The hair-and-skin-focused GHK-Cu sibling — A-H-K instead of G-H-K, with users specifically separating it as the hair-regrowth/skin-rejuvenation copper peptide while GHK-Cu drives nail/general tissue.
Aggregated from public discussions and community forums, synthesized into themes and counts. Anecdotal and self-reported — not causal, not evidence a compound is safe or effective, not medical advice, and not a recommendation to use. No dosing shown.
Educational information only — not medical advice, and not a recommendation to use any compound. Many peptides here are not approved for human use; legal status and evidence quality vary and are noted above. This page contains no dosing information. Consult a qualified clinician before making any health decision.