Search product dossiers, aliases, quality checks and buying guides. Content is educational and does not replace approved product information or medical advice.
Peptides are short chains of amino acids. This guide explains what they are, how they differ from proteins, which peptide medicines are approved and why 'research peptide' is a different category.
GHK-Cu is a naturally occurring copper-binding tripeptide used in skincare. What the research shows for skin, where the evidence is thin, and how topical and injectable use differ.