GHK Cu Peptide Therapy Brea, CA Orange County Professor Dr Patrick Treacy has cautioned against the current hype surrounding peptides, emphasizing that aesthetic medicine must remain grounded in solid clinical evidence rather than marketing GHK Cu: The Peptide That Supports Healthy Aging GHK Cu (copper peptide) is naturally occurring in the body and plays a role in supporting skin health, collagen production, and tissue repair. As GHKCu Copper Peptide Therapy Skin & Healing Regeneration