AHK Cu (Copper Tripeptide 3) Ingredient Guide Nubeean Noosa GHK Cu Glow Peptide Stack for Skin Rejuvenation Jennifer R. Berman MD Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule Glow from within GHK Cu is one of the most powerful regenerative peptides for skin, hair, and total tissue health Think: boosted collagen, enhanced healing, and real, visible rejuvenation over time. GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3 Dr. Brenner Labs