Skin safety should always come first. The Philippine Dermatological Society reminds the public that intravenous glutathione must not be used for skin whitening. It has weak evidence of effectiveness and carries Glutathione Skin Whitening How Does It Work? Glutathione Injections For Skin Whitening: Benefits, Uses, Side Effects Oral glutathione has been everyone on my timeline but does it actually work?! Looking at the data, its very modest to be honest. Id recommend sticking to what we know works fo hyperpigmentation in How Sublingual Absorption Of Glutathione Helps In The effects of the oral supplementation of LCystine associated with reduced LGlutathioneGSH on human skin pigmentation: a randomized, doubleblinded, benchmark and placebocontrolled clinical trial Duperray 2022 Journal of Cosmetic