The Some By Mi Yuja Niacin 30 Days Brightening Starter Kit is a 4-step skincare routine designed to fade dark spots, brighten dull skin, and deeply hydrate with the power of Yuja (citron extract) and Niacinamide (5%). Packed with Vitamin C and skin-soothing ingredients, this set helps achieve a radiant, even complexion in just 30 days!