ghk-cu side effects water retention Peptides Before and After: Dosage, Benefits & How It Works for Skin and Hair GHK-Cu Serum: Benefits for Your

[DOI] [PMC free article] [PubMed] [Google Scholar] Yu C

Over-the-counter (OTC) topical skin care serums that contain GHK-Cu peptidesometimes referred to on the ingredients list as copper tripeptide-1 or copper tripeptide complexoften include more than just one peptide to ensure as many peptide skin benefits as possible, including stimulating fibroblasts to get busy making more collagen or blocking enzymes that cause collagen breakdown

It is one of the twelve peptides the FDA removed from the list that restricted compounding in April 2026, and one of seven under formal advisory review on July 2324, 2026

Risk assessment should consider patient age, smoking history, and presence of constitutional symptoms

Also see our Top Picks for supplements to slow age-related macular degeneration