Youre injecting this in your body, so thats the biggest thing for me
Why benzyl alcohol matters: The 0.9% benzyl alcohol as a preservative in bacteriostatic water is bacteriostatic, not bactericidal it slows microbial growth rather than sterilizing
GHK-Cu is studied in preclinical research on extracellular matrix remodeling, fibroblast and keratinocyte signaling, hair follicle research, dermal wound model studies, and copper-dependent enzyme research
A handful of human trials have been registered -- some in Croatia, where most of the original research originated -- but published results are sparse and methodologically limited
However: It can cause water retention, increased appetite, and insulin sensitivity changes in some users