how long for ghk cu to work “Is GHK-Cu actually worth it?” is genuinely one of the most common questions in my comments, so let me finally answer it properly., The short version: copper peptides have real research behind them, Copper Peptides: The New Skin

Taken together, these results suggest that nuclear localization of FOXO4 may contribute to Leydig cell senescence and the downregulation of testosterone synthesis

Collagen synthesis is promoted through fibroblast activation, with research demonstrating that GHK-Cu at optimal concentrations, particularly in combination with hyaluronic acid, can elevate collagen IV synthesis by 25.4 times in cell models and 2.03 times in ex-vivo skin tissue

Cellular senescence as a mechanism and target in chronic lung diseases

[PubMed] [Google Scholar] 105.PCO-02Safety and Pharmacokinetics Trial NCT02637284

Store it in a cool, dry place at 2-8C (in the refrigerator)

Tchang: Research-grade peptides are largely unregulated for human use in terms of sterility, purity and safety compared to FDA-approved peptides