Niacinamide (vitamin B3) supports the synthesis of lipids and ceramides, which are essential for the skin's barrier function. The vitamin can prevent skin aging, improve skin elasticity and even out uneven skin tone. Serums and creams with niacinamide help with hyperpigmentation and skin redness. Niacinamide can also reduce excessive sebum production. By balancing sebum production, pores appear smaller and less "stretched". Due to its antimicrobial and anti-inflammatory properties, niacinamide is also popular for pimples, blemishes and inflammation. Vitamin B3 is able to positively influence moderate acne.