This product is easy to use and designed to quench your skin without the greasy feel, thanks to its key ingredient, natural willow bark water (birch sap), which ensures fast and smooth absorption. Adhering to the high standards of COSRX, all products are formulated with skin-friendly ingredients to alleviate irritated skin. This product is hypoallergenic, dermatologist tested, and free from animal testing, parabens, sulfates, and phthalates, making it a safe and gentle choice for your skincare routine.