Face serums can feel overwhelming because they are ingredient-rich and often marketed for very specific concerns. The easiest way to choose is to start with one primary goal: hydration, brightening, calming, texture, or oil balance. Serums are lightweight and concentrated, so they go on before moisturizer. For dry skin, look for hyaluronic acid, glycerin, and ceramides. For oily or blemish-prone skin, niacinamide and zinc are common picks. If your skin is sensitive, favor fragrance-free formulas with fewer strong actives and add products one at a time.