It belongs to a wider set of peptides moving through longevity and biohacker circles, including BPC-157, Cerebrolysin, Semax, Selank, Dihexa, P21, and the neurotrophic factors BDNF and klotho, whose human cognitive evidence ranges from thin to absent and which I reviewed in detail here
How long does GHK-Cu take to show results
What Exactly Is Bacteriostatic Water
For skin and hair goals, physician-prescribed compounded topical at 1-10%+ concentration once daily delivers therapeutic levels directly to the target tissue
Look for GHK-Cu products with third-party lab testing, and GHK-Cu products should provide access to Certificates of Analysis to verify quality, identity, and copper concentration
At least one study found that both vitamins can work together to help brain development and health throughout your lifetime