SOME BY MI Real Glutathione Brightening Care Mask is a sheet mask that helps reduce pigment spots and acne scars, and adds radiance and vitality to tired skin. This sheet mask is based on the ingredient glutathione. Glutathione is an antioxidant already found in the skin, which helps reduce signs of environmental damage to the skin, including damage from the sun and pollution. However, the skin’s own production of glutathione decreases as we get older, whereby a supplement in the form of, for example, this sheet mask is beneficial, if you want a more uniform skin with vitality and radiance.