GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B 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 PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit Copper Peptide 10% GHK CU, 5% AHK CU with Oligopeptide 1 Hair Treatment Serum GHK Cu Cooper Peptide: The Complete Skin & Repair Guide (2026)