The key difference is concentration
Pickart stated that GHK-Cu has a favorable safety profile, highlighting that there is no indication that it causes side effects in test subjects [2]: The molecule is very safe and no issues have ever arisen during its use as a skin cosmetic or in human wound healing studies. In a 2018 review based on new genetic data, he reiterated that all biological actions associated with GHK appear to be health positive. He pointed to over four decades of GHK research encompassing cell, tissue, and animal studies, also noting the peptides inclusion in commercial anti-aging and cosmetic products such as creams, liposomes, and dermal patches [1]
It also helps reduce acne, address acne scars, minimize pores, and restore a radiant, refreshed appearance
Sam personally experiences the immediate benefits of Glutathione through vitamin injection or IV therapy, noticing improvements in his lungs, sinuses, and energy levels