La Roche Posay Anthelios UVmune Invisible Fluid SPF50+ is a dermatologically-tested sunscreen that provides ultimate UVA/UVB protection with innovative UVmune 400 technology. This lightweight, non-perfumed fluid formula is specially designed for sensitive skin and offers invisible coverage with no white cast. The sunscreen features advanced UVmune 400 technology that protects against long UVA rays up to 400nm. The ultra-fluid texture absorbs quickly into the skin without leaving any greasy residue, making it perfect for daily use and under makeup application. It is water-resistant and recommended by dermatologists for sensitive skin. For optimal protection, apply generously 20 minutes before sun exposure and reapply every 2 hours, especially after swimming, sweating, or toweling.