The human data, while limited by sample size (n=20-40 across studies), documented measurable outcomes: Photoaging reversal: In a 12-week facial application study, participants using 2% GHK-Cu cream showed mean improvement scores of 4.8/10 in skin laxity, 5.6/10 in fine wrinkle depth, and 6.2/10 in overall photoaging appearance on physician-graded scales
10.1093/pcp/pcg093 97 LiuW.XieY.MaJ.LuoX.NieP.ZuoZ.et al
2017 Sep;10(5):1017-1024
tb killing, additional studies, such as the kinetics of bacterial killing at different doses of L-GSH and RIF are needed
In humans, its mostly produced by the liver
While transient aberrant changes associated with aluminum hydroxide salts are acknowledged, the direct link between microscopic muscle necrosis and the mechanisms underlying ME/CFS requires further investigation