Niacinamide serum is known for its multiple benefits to the skin, making it a popular choice for various skin concerns. One of the most common benefits of niacinamide serum is its ability to reduce acne By regulating sebum production, niacinamide helps prevent clogged pores, a common cause of breakouts. Its anti-inflammatory properties also soothe irritated skin and reduce the redness often associated with acne.