This highly concentraed seurm fetaures niacinamide thar helps refine pores, smooth skin, relieve redness. This serum instantly imprices skin texture and radiance by reducing excess oil and minimizing pore sizes. Key Ingredients:Niacinamide :Provides total acne care by controlling sebum production, soothing acne inflammation and diminishing post acne scarsN-Acetylglucosamine(NAG) :Works in synergy with niacinamide to effectively fade hyperpigmentationZinc PCA :Inhibits inflammation and promotes recovery of damaged skinAllantoin :Promotes collagen synthesis to facilitate skin regeneration. Dermstore has partnered with Flex to allow you to use your Health Savings Account (HSA) or Flexible Spending Account (FSA). This means you can now use your HSA or FSA debit card to buy COSRX products with pre-tax dollars, resulting in net savings of 30-40%, depending on your tax bracket. Eligible for HSA/FSA with a letter of medical necessity at checkout. From dermatologist-recommended treatments to solutions for chronic skin conditions like acne, eczema, and rosacea, these products are both effective and eligible. | COSRX The Niacinamide 15 Serum, 20 ml | Dermstore