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 Blue Copper Peptide Face Cream 4% 2400mg Night Moisturizer Anti Aging eBay GHK Cu (copper peptide) is a science backed anti aging compound that supports collagen production, skin regeneration, and overall skin health. Used in both topical serums and subcutaneous 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