Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference GHK Cu Skin Peptide Pen 50mg Noventra Pharma Oh My Health Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with Amazon.com: LUMORA GHK Cu Copper Peptide Face Serum Advanced Skin Firming & Rejuvenating Serum for Collagen Boost, Smoother Skin & Complexion Renewal 1 fl oz : Beauty & Personal Care GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B