Skinworks GHK Cu will always be that girl One of my go to favorites right now is GHK Cu. Here's a little about it: GHK Cu is something your body actually produces naturally and 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 Restoracell with Copper Peptides, a Great Partner for Microneedling Vitali Skincare Meet your new skincare essential. GHK Cu is a powerful copper peptide that smooths, renews, and revitalizes the skin from within. Say goodbye to dullness and hello to firmer, youthful, glowing skin.