SOME BY MI | Yuja Niacin 30 Day Blemish Care Serum Mask is a highly concentrated sheet mask specifically formulated to reduce blemishes and dark spots. Enriched with vitamin C-rich yuja (lemon) extract, it brightens and hydrates the skin. Additional niacinamide, Platolwhite-C, arbutin, and glutathione help even out skin tone. Four different vitamins revitalize and soothe the skin for a fresh and radiant complexion. This sheet mask is also certified vegan.