GHK Cu: Skin Healing, Anti Aging, & Hair Growth Benefits What Are GHK Cu Peptides for Skin and Hair Health? Peptides for Gut Health: What the Research Currently Shows Your Health Magazine 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 GHK Cu Glow Peptide Stack for Skin Rejuvenation Jennifer R. Berman MD