More in peptides GHK-Cu (Copper Peptide): Skin, Hair, and Healing Evidence A measured look at GHK-Cu, the naturally occurring copper peptide, and what early research suggests about its role in skin, hair, wound healing, and aging
Why is it a freeze-dried powder rather than a liquid?+ Reduced glutathione is prone to oxidation in solution
In addition, there is an established tolerable upper limit for nutrients that have Daily Values
"EC 1.11.1.6 - catalase"
This research was funded by the NIH National Center for Research Resources, the National Center for Advancing Translational Sciences (UL1TR001449), and the UNM Department of Pathology
The short answer is that glutathione can be highly effective, but only if it reaches your cells