Copper Peptides Before and After Hair: What to Expect Month by Month HapiPatch Ghk cu is honestly amazing for firmer, tighter, more lifted skin!! As we age, our natural copper peptide levels drop, which slows down collagen + elastin production (aka the proteins that keep your GHK Cu Peptide Serum 30 ml, Copper Peptide Serum with Hyaluronic Acid for Tightening, Collagen Boosting Evolve Rewind the Clock with GHK Cu (Copper Peptide)! Experience the skin rejuvenating power of copper peptides now available at Evolve TX Medical Group! Smooth wrinkles Boost collagen