Skin Aging & Wrinkles
Collagen loss and photoaging — the home turf of copper peptides.
Skin aging is largely collagen and elastin decline plus photodamage. GHK-Cu is the most-studied copper peptide for skin remodelling — collagen support and antioxidant activity — with AHK-Cu as a related topical.
Topical copper peptides are well tolerated and have the best evidence of the compounds here. This is a cosmetic, low-risk category; sunscreen and retinoids remain the proven foundation, with copper peptides as a credible addition.
Compounds researched
Ranked by editorial relevance — a measure of how central each compound is to the conversation, not a claim of effectiveness.