Peptide Science Basics: Evidence-First Education on Peptides and Health

Key Takeaways GHK-Cu is a naturally occurring copper-binding tripeptide with one of the largest bodies of published research among ‘longevity’ peptides, including decades of work on collagen synthesis, wound healing, and antioxidant activity. Topical GHK-Cu (often listed as ‘copper tripeptide-1’ on ingredient labels) is regulated as a cosmetic ingredient in the U.S. and is widely used in commercial serums and creams without requiring FDA pre-approval. Injectable GHK-Cu is a c