This preservative inhibits the growth of bacteria, making it safe for multiple uses over a 28-day period after the vial is first punctured (as long as it is stored correctly)
Advanced / Aggressive Approach (3 mL = ~6,667 mcg/mL) Advanced daily dose: 500 mcg total blend once daily ~8 units on a 20 mg vial, ~15 units on a 10 mg vial
Label vials with date of reconstitution and use by date to track usage
GHK-Cu is one of the very few skincare ingredients where the before-and-after story is backed by genuine science rather than clever photography
Injections are one option a provider may recommend when a deficiency is confirmed, especially when absorption is a concern
Some researchers find that adjusting meal timing and size also helps, eating smaller, more frequent meals rather than large, infrequent ones