Copper Peptide Solution, 1% GHK Cu in double Hyaluronic Acid Serum GHK Cu Peptide: What It Does for Body Composition and Metabolic Health Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit GHK Cu is one of the most powerful regenerative peptides for skin, hair, and overall tissue health. GHK Cu supports collagen production, healing, and visible rejuvenation from within. It's commonly used to improve skin GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia