Glutathione is the brightening antioxidant that K-beauty can't stop talking about. Often called the master antioxidant, it helps brighten the look of dull, tired skin, visibly even out skin tone and defend your complexion against everyday environmental stress for a clearer, more luminous finish. K-beauty formulas love to pair it with niacinamide, vitamin C and tranexamic acid to amplify its glow-giving effects. Our edit brings together the best glutathione serums, ampoules, toners and masks from the K-beauty world, including Manyo's much-loved Glutathione 7 range.