Breakthrough daily moisturizer containing Mexoryl™ SX, a unique organic UV filter that is highly protective against short UVA waves, provides comprehensive UVA/UVB protection.Allergy tested, PABA-free, suitable for sensitive skin, offers 24-hour hydration, and the most complete broad spectrum protection. MEXORYL™ SX is the most effective organic UV filter that protects against UVA rays (maximum absorption at 344nm) with high photostability, a key factor in sunscreen protection efficacy. This high photostability means the sunscreen will maintain a higher UVA protective ability longer and not degrade as quickly as other UVA filters when exposed to the sun.