Cosmeceutical Peptides like tripeptide-copper complex (GHK-Cu Copper) stimulate collagen production which in turn thickens the skin and plumps wrinkles from within. GHK-Cu Copper (Active Copper) has been used as a wound-healing agent since the 1970s. Cosmetic scientists began to think of wrinkles as tiny wounds in the skin, and began to apply the same logic to treatment of wrinkles. After topical application of copper peptides the skin normalizes, wrinkles decrease and skin tone is clarified. GHK-Cu Copper is a technically advanced ingredient, so it’s fairly expensive and products that contain it are priced at the premium end of the market.