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 Biossance Squalane + Copper Peptide Rapid Plumping Serum Glow Peptide Injection: Revolutionizing Skin Rejuvenation Hubmed GHK Cu (glycyl l histidyl l lysine copper) is a powerful peptide that binds with copper to promote skin regeneration and repair. It works by: Stimulating collagen & elastin production Helps firm and smooth the skin.