SOME BY MI Yuja Niacin Blemish Care Serum is infused with 82% Korean Yuja extract that revitalizes dull complexion. Together with 5% Niacinamide the serum inhibits melanin production to prevent skin from darkening. Packed with 12 additional super vitamins, this special serum aids in freshening up skin leaving skin bright and moisturised. Texture wise it is lightweight and doesn't leave a sticky finish.