Out-of-Stock Masks Some By Mi Yuja Niacin 30 Days Blemish Care Serum Mask 25g Some By Mi smb3245 $2.47 Some By Mi Yuja Niacin 30 Days Blemish Care Serum Mask is a vegan mask for daily use that helps cleanse, brighten and moisturise the skin. Formulated with Yuja extract, niacinamide and 4 vitamins. Dermatologically tested. View