The Ordinary Alpha Arbutin 2% + HA is a water-based serum that combines a high concentration of purified alpha arbutin with hyaluronic acid. This formulation targets uneven skin tone and hyperpigmentation while providing hydration for improved product absorption. Key features: • Contains 2% pure alpha arbutin for targeting dark spots • Enhanced with hyaluronic acid for better absorption • Water-based lightweight serum formula • Helps improve uneven skin tone • pH-optimized formula to prevent ingredient degradation The formula is specifically designed with an optimal pH level to minimize the degradation of alpha arbutin, which is known to be sensitive when combined with water. The product may experience natural color changes when exposed to sunlight or increased temperatures, but testing has shown this does not affect its efficacy or safety. Can be used in both morning and evening skincare routines.