AHK Cu + GHK Cu Hair Serum Pro 4800mg Hair Growth Neurogan Neurogan Health Copper Peptide Regenerating Serum for Glowing Skin and Hair 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 GHK cu Copper Peptide: The "Glow" for Hair & Skin Seenergie PH 10 Benefits of Copper Peptides (GHK Cu) Boosts collagen production firmer, youthful skin Improves skin elasticity reduces sagging Reduces fine lines & wrinkles Accelerates wound & scar healing Strengthens skin barrier 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