The short answer is: it depends on your skin type, dosage, frequency, and overall health
The short answer is that glutathione itself is recognized as safe by the FDA, but glutathione IV therapy specifically for cosmetic purposes like skin whitening is not FDA-approved
Yang JC, Lee DH, Lee JS, Fan Y, de Marinis F, Iwama E, et al
Many antioxidant vitamins commonly praised in mainstream medicine, such as C, E and A, are considered classical antioxidants and, in theory, are supposed to be effective in combating free radical damage
Some studies show no change in GSH status upon supplementation of oral glutathione (reduced form) in healthy subjects