Best Serum For Oily Skin: Belif Hungarian Water Essence If you have oily skin and don't like the feeling of heavy products, you'll love the Belif Hungarian Water Essence ($42). It contains hydrating sodium hyaluronate (a form of hyaluronic acid) and soothing ingredients like oat extract and rosemary to bring down redness and irritation. Image Source: sephora.com Belif Hungarian Water Essence $42 from sephora.com Buy Now