Niacinamide, also known as vitamin B3, is commonly used in skincare products for its various benefits, including the potential to minimize the appearance of enlarged pores . To incorporate niacinamide into your skincare routine, look for serums or moisturizers containing 2-10% niacinamide. It's generally well-tolerated, but if you have sensitive skin, start with a lower concentration and gradually increase as your skin adjusts.