How to Choose the Right Serum for each Skin Type? To choose the right serum, first identify your skin type. Wash your face and wait for about an hour without applying any products. If your skin feels tight, you likely have dry skin. If your T-zone is shiny, you have oily skin. A mix of both indicates combination skin. If your skin feels irritated or reacts easily, it’s sensitive. Knowing Your Skin Type Dry skin: Needs extra hydration. Look for serums with hyaluronic acid. Oily skin: Benefits from ingredients that control oil, like niacinamide. https://www.kallinz.com/blogs/skincare/what-is-a-serum-and-do-i-need-it-in-my-skincare-routine