Compared with the placebo group, skin desquamation, hydration, skin wrinkling, and elasticity were significantly improved after 4, 4, 12, and 12 weeks of administration, respectively
What you may not know is where to actually get them prescribed safely, sourced from a real pharmacy, and overseen by a provider who will tell you honestly whether they are right for your situation

It is classified as a research chemical, meaning: It cannot be legally marketed as a drug or supplement It is not recognized as "Generally Recognized as Safe" (GRAS) No New Drug Application (NDA) has been submitted It has not undergone the formal FDA approval process Research Chemical Status BPC-157 is available for purchase as a "research chemical" in most jurisdictions, with important caveats: Sold for "research purposes only" Not for human consumption (legally) No quality standards enforced by regulatory agencies Purity and identity depend entirely on supplier integrity International Regulations Regulatory status varies by country: United States : Research chemical, not approved for human use European Union : Not approved, status varies by member state Canada : Not approved for human use, research chemical Australia : Not approved, TGA Category 4 substance United Kingdom : Not approved for human use Sports and Competition BPC-157 is not specifically listed on the World Anti-Doping Agency (WADA) prohibited list, unlike TB-500

It does not establish that GHK-Cu reverses aging
At cosmetic concentrations (1 to 5 percent), GHK-Cu has a favorable tolerability profile in published studies
However, ideal storage temperatures range between 59-77f / 15-25c