Parents & teen athletes: not everything trending on social media is safe., Copper peptides like GHK Cu are being promoted for skin health, but these products are unregulated and not FDA approved, 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 Copper Peptide: The "Glow" for Hair & Skin Seenergie PH Advanced GHK Cu Face Cream 2400mg 4% Firmer Skin Neurogan Neurogan Health The FDA just changed the rules on peptides effective April 15, 2026. BPC 157, GHK Cu, MOTS C, and TB 500 have been removed from the Category 2 restricted compounding list. Here is what