Amazon.com: GHK Cu Copper Peptide Supplement, Anti Aging & Hair Growth Support, Improves Skin Elasticity & Firmness, Thicker, Fuller Hair, Easy Absorption, Precisely Dosed, 90 Vegan Capsules : Health & Household GHK Cu is one of my personal favorites for a lot of reasons, but I can say without a doubt that it's use effectively stopped and reversed, my receiving hairline. However, there are GHK Cu 50mg 4 Pack Lyophilized Powder Made In USA Most peptides don't come ready to inject they come as powder for a reason. Peptides are lyophilized (freeze dried) to keep them stable and effective. When you receive them, you simply: Add