Niacinamide

Niacinamide is the amide form of vitamin B3 and one of the best-researched actives in skincare. At 2–10% it regulates sebum production, visibly minimises enlarged pores, strengthens the skin barrier by boosting ceramide synthesis, and reduces transepidermal water loss. It also inhibits the transfer of melanin to keratinocytes, which makes it effective against post-inflammatory hyperpigmentation and uneven skin tone. Studies show additional anti-inflammatory benefits for acne and rosacea-prone skin. Niacinamide is stable in formulation, pairs well with almost every other active including retinol and vitamin C, and is well tolerated even by sensitive skin — making it an ideal daily-use ingredient for nearly every skin type.