Most human studies used it around 2% (as Glutathione or Glutathione Disulfide) and a 2% oxidized glutathione lotion and a 2% S-acyl glutathione cream are the concentrations with actual clinical data behind them
10.1006/expr.1999.4345 Exp
CHOOSE AISHI TOKYO GLUTATHIONE with ORAL SUNBLOCK Definitely improves UNEVEN SKIN TONE, SAGGING, FRECKLES, DULL SKIN, DRY SKIN and other skin problems caused by sun rays, stress and pollution
IV therapy is able to get glutathione directly into the bloodstream, bypassing the stomachs digestive enzymes
This stack requires comprehensive baseline labs and periodic monitoring of IGF-1, metabolic markers, and NAD+-related biomarkers
Moreover, maternal serine availability is critical for maintaining antioxidant defenses against oxidative stress in weaned mouse offspring 74