The Ordinary Alpha Arbutin 2% + HA is a concentrated serum that combines purified alpha arbutin with hyaluronic acid to target uneven skin tone and hyperpigmentation. This water-based formula delivers a high 2% concentration of alpha arbutin for effective skin brightening while hyaluronic acid enhances absorption. Key features: • Contains 2% pure alpha arbutin for targeting dark spots • Enhanced with hyaluronic acid for better absorption • Water-based serum formula • Helps reduce appearance of uneven skin tone • pH-optimized formula to maintain ingredient stability • Suitable for daily use (AM and PM) • 60ml size for extended use The formula is specifically pH-balanced to minimize degradation of the alpha arbutin, which is sensitive to breakdown in water-based formulations. Some natural color changes may occur when exposed to sunlight or increased temperatures, but this does not affect the product's efficacy or safety. The larger 60ml size offers extended use compared to standard 30ml versions.