Cu Peptide Before and After: What to Expect for Skin and Hair Hyperpigmentation no more? GHK Cu Users Share Their Stories Aseir Custom 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK The key to preventive aging in your 20s? Starting early, with science that's gentle yet powerful. Introducing the new Copper Peptide + PDRN 1.25% Face Serum your first step into anti aging