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Thus, the reaction is not coupled to energy production but instead yields a significant reactive oxygen species (ROS)

A scientific review of four small-scale studies confirmed that glutathione use does result in some skin lightening.24 Additionally, glutathione has also been shown to decrease psoriasis when levels are bolstered by intake of whey protein, which contains glutamylcysteine, a precursor to GSH.25 Most impressively, perhaps the same studies mentioned above also show that glutathione doesn't just lighten, but it improves skin elasticity and decreases wrinkles' appearance

It's important to follow a balanced diet that includes nutrients that aid glutathione production, such as cysteine, glutamine, selenium, and vitamin C

For a deeper dive into how collagen fits into skin-focused routines, read our guide on Do Collagen Supplements Help Skin