cosmetic grade ghk cu powder GHK-Cu Copper Peptide – 99.7%+ Pure Cosmetic-Grade Ingredient for DIY Serums, Creams & Scalp Tonics They are needed for natural healing and regeneration of your skin DNA Code- DIY Copper Peptide

This is particularly disappointing because, despite being a copper peptide isolate serum with the fewest key ingredients, NIODs product comes in second for the highest cost per mL (Allies of Skins serum comes in first, but closes the gap a bit when the subscription price is lowered after the fifth order)

People who take certain medications may also be at risk of vitamin B12 deficiency, including, but not limited to, estrogen, H2 receptor antagonists, PPIs (Proton Pump Inhibitors), Chloramphenicol, and Metformin

The dose translation between these compounds is a working assumption, not a settled science

8 One similar study on a lower concentration (0.4% GHK-Cu) applied topically for venous statis ulcers, did not find benefit over placebo