There are plenty of skincare ingredients that only lend themselves to specific skin types and concerns — take, for example, salicylic acid, which works best for banishing blemishes and minimizing oiliness; or hyaluronic acid, which aids in hydration. Niacinamide, however, is one of the more versatile ingredients that’s found in many skincare formulas. According to board-certified dermatologist Dr. Marisa Garshick, niacinamide can help reduce the look of redness, brighten skin, support the moisture barrier and regulate sebum production, among other benefits. Below, find out more about what niacinamide is, how to use the ingredient and our editors’ go-to niacinamide serums.