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 Frontiers Glutathione: A Samsonian life sustaining small molecule that protects against oxidative stress, ageing and damaging inflammation Glutathione and Side Effects: What You Need to Know for Better Health Performance Lab Understanding Glutathione Deficiency Invigor Medical