https://medium.com/@olismith1012/does-niacinamide-face-serum-actually-work-2a4441e133be

If you have oily skin, you'll want to look for a face serum that contains niacinamide. Niacinamide is an ingredient that helps to control sebum production and keep the skin looking matte. It's also great for acne-prone skin as it helps to reduce inflammation.