GHK Cu is the compound your body made at 25 and quietly stopped making. Most people find it in overpriced serums. Few understand what it actually does, or what happens when you're not Amazon.com: GHK Cu Copper Peptides Facial Serum with SNAP 8 for Fine Lines, Wrinkles, Firming, Deep Hydration & CollagenAll Skin Types(1 fl.oz 30ml) : Beauty & Personal Care GHK Cu Copper Peptide Benefits, Uses & Safety Intra V Your skin deserves more than surface level solutions. GHK Cu is a powerful copper peptide known to support: Collagen production Skin regeneration Reduction in fine lines and wrinkles Improved elasticity