Glutathione is an antioxidant that occurs naturally in skin, where its function is to help defend against visible signs of environmental damage. It’s believed that the gradual decline of glutathione in skin is one of the factors that contributes to external signs of aging.

In addition to its status as an antioxidant, glutathione is also a peptide composed of three amino acids: cystine, glutamic acid and glycine.

Benefits of glutathione
There are several benefits to glutathione because of its potent antioxidant activity: the ability to fight oxidative damage over time, to help restore skin’s barrier and as mentioned, to help improve the look of discolorations and promote an even skin tone. Research has found that when applied directly to dark spots, glutathione on skin improved the look of sun-exposed areas