Alpha Arbutin 2% + HA is a water-based serum specifically designed to combat uneven skin tone and visibly improve pigmentation. It combines a high concentration of purified alpha arbutin, a well-known skin brightening ingredient, with hyaluronic acid. This serum enhances skin uniformity and reduces dark spots, also contributing to the overall brightness of the face. Alpha arbutin is sensitive to degradation, so maintaining an ideal pH is crucial to preserving its effectiveness.