Botox in a Bottle? Meet GHK Cu: The Ultimate Prescription Only Copper Peptide Cream Looking for firmer, smoother, more radiant skin without irritation? GHK Cu (Copper Tripeptide 1) is a powerful regenerative ingredient that 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: Copper Peptides GHK Cu Whipped Beef Tallow Balm for Skin, Grass Fed Beef Tallow with Methylene Blue, Manuka Honey & Vitamin E, Face & Body Moisturizer for Dry, Mature & Sensitive Skin, 2.8 GHK CU Face Cream: Anti Aging & Firming Solution