GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu for Skin Rejuvenation WeCare Pharmacy 6 month GHK CU check in Main takeaway: skin transformation takes time. GHK CU peptide binds to copper and activates genes involved in wound healing, collagen synthesis, and skin remodeling. On the face, this translates GHK Cu Hair Growth Hot take: Not FDA approved isn't the mic drop people think it is. A LOT of things in your daily routine aren't FDA approved either and you probably used them all