Some By Mi Yuja Niacin 30 Days Brightening Starter Kit (4 Pieces) is a clinically designed set combining cleanser, toner, serum, and cream enriched with Yuja extract, niacinamide, arbutin, and antioxidants to deliver comprehensive brightening and pigmentation correction. Each component works synergistically to exfoliate, hydrate, and reinforce barrier function, reducing dullness and post-acne discoloration. With regular use, the starter kit promotes a more even, luminous, and revitalized complexion, refining texture and enhancing skin resilience and overall clarity.