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10.1038/ncb2837 Nat

Greater bone density : Long-term use of either therapy improves bone density, with benefits from both GH and TRT reaching a peak within the first two to three years

doi: 10.1016/j.ecoenv.2023.114708, PMID: [DOI] [PubMed] [Google Scholar] 42

It is typically associated with more targeted cosmetic applications such as: Scalp-focused serums Hair appearance and density-support formulations Specialized peptide blends for haircare systems Compared to GHK-Cu, AHK-Cu is generally considered more niche and formulation-specific , especially in hair and scalp-oriented cosmetic products

Since then, biological effects of GHK have been commonly attributed to its role in copper metabolism