GHK-Cu
A copper-binding tripeptide found in human plasma, studied in cell and wound models and used as a cosmetic ingredient.
Peptide research index: Skin & Cosmetic
Plain-English research profiles of the peptides and related compounds that come up most in the literature: what each one is, where it came from, what published studies have actually examined, and what is still unknown. Every profile cites its sources. Nothing here is medical advice or usage guidance.
2 profiles
Melanotan II
An unapproved synthetic melanocortin agonist studied briefly in the 1990s; its unregulated use is tied to case reports of serious harm.