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: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration Are Peptides Good for Hair Growth and Shine? Benefits of Copper Peptides & Peptide Serums GHK Cu Lrak Technologies GHK Cu (Copper Peptide) LeadWest Medical GHK Cu Cooper Peptide: The Complete Skin & Repair Guide (2026)