Copper & cosmetic peptides
Peptides studied largely in skin, hair, and topical contexts, including copper-binding signalling peptides and synthetic cosmetic peptides.
How this class works
Studied for roles in collagen signalling, wound biology, and skin appearance, frequently in topical rather than systemic contexts.
GHK CU grades highest (D-tier) on current published evidence. This reflects evidence maturity — not a recommendation to use anything.
Compounds in this class
Head-to-head: GHK CU vs Argireline
FAQ
Which copper & cosmetic peptides has the strongest evidence?
GHK CU currently grades highest in this class (D-tier) on published evidence — which reflects evidence maturity, not a recommendation.
Are any copper & cosmetic peptides FDA-approved?
No members of this class are FDA-approved; they are investigational or research-only.
How do compounds in this class differ?
Studied for roles in collagen signalling, wound biology, and skin appearance, frequently in topical rather than systemic contexts. Within the class, members differ widely in evidence maturity, approval status, and safety — the tiers and evidence stages above show how.
Research reference only. Not medical advice. Compounds in a class can differ greatly in evidence, approval status, and safety.