1: Mortazavi SM, Mohammadi Vadoud SA, Moghimi HR. Topically applied GHK as an
anti-wrinkle peptide: Advantages, problems and prospective. Bioimpacts. 2024 Apr
28;15:30071. doi: 10.34172/bi.30071. PMID: 39963574; PMCID: PMC11830136.