Needle less peptides??? Yes, really , Sublingual GHK Cu peptide strips are designed to dissolve under your tongue or at the roof of your mouth, where the tissue is thin and highly vascularmeaning Blue Copper Peptide Serum Repairing & Firming Benefits GHK Cu is a copper peptide known for supporting skin repair, collagen production, and overall tissue healing., Traditionally, its taken as an injection but that can come with irritation, bruising, or GHK CU Crescent Chems Research