Epithalon: The Peptide That Targets the Aging Clock What if aging wasn't just about time but about signals? Epithalon (also known as Epitalon) is a pineal derived peptide that's been studied for Amazon.com: GHK Cu Copper Peptide Supplement, 120mcg High Purity Supplement for Skin & Hair, Enteric Coated for Maximum Absorption, Vegan & Gluten Free (60 Count) : Health & Household Epitalon TFA 50000+ Bioactive Molecules GlpBio GHK Cu: The Peptide That Supports Healthy Aging GHK Cu (copper peptide) is naturally occurring in the body and plays a role in supporting skin health, collagen production, and tissue repair. As GHK Cu Cooper Peptide: The Complete Skin & Repair Guide (2026)