A practical guide to one of skincare’s best-known copper peptides: what it is, how to read a formula and what concentration disclosure means.
See Featured GHK-Cu SerumGHK-Cu is a copper-binding tripeptide. In cosmetic skincare it appears in topical formulas intended to support the appearance and condition of mature-looking skin.
GHK-Cu is the copper complex of the tripeptide GHK. On cosmetic ingredient lists, shoppers may also encounter the INCI name Copper Tripeptide-1. Product quality cannot be determined from the peptide name alone; the complete formula, concentration disclosure, packaging and intended use all matter.
Look for a clearly identified peptide, a complete ingredient list, transparent product size, practical usage directions and realistic cosmetic claims. A disclosed concentration can make products easier to compare, but percentage alone does not establish superiority.
Peptide identity
Disclosed concentration
Full INCI / ingredient list
Hydrating support ingredients
Price and bottle size
A concentrated GHK-Cu product with a short disclosed ingredient list.
Full ingredients listed by the brand: Water, Glycerin, Sodium Hyaluronate, GHK-Cu, Leucidal.
Affiliate/ownership disclosure: Peptide Skin Index is developed by the team behind I’M FABULOUS COSMETICS. This featured product is sold by I’M FABULOUS COSMETICS. Product facts shown here should be checked against the retailer page before purchase.