Amazon.com: Neurogan GHK Cu (Copper Peptide) Neck & Face Serum 1,200mcg (1 oz bottle) : Beauty & Personal Care GHK Cu for Skin: SIGNAL's Guide to Rejuvenation Skin can change when biology is supported, GHK Cu is a naturally occurring copper binding peptide thats been studied for its role in: Supporting collagen and elastin production, Improving skin Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution GHK CU Cream Anti aging facial moisturizer, firming and moisturizing for all skin types, suitable for men and women. AliExpress 66