This lightweight serum effectively soothes and hydrates sensitive skin. With 10% Azelaic Acid, it reduces redness and treats acne, while Hyaluronic Acid provides essential moisture. Niacinamide helps combat hyperpigmentation, making this serum suitable for blemish-prone and oily skin types. For best results, start with 1-2 drops, gradually increasing to 5 drops as tolerated. Initially, use it 1-2 times a week, then increase to twice daily for optimal benefits.