Ultra Fluid INVISIBLE SPF50 offers high daily protection against UVB, UVA and HEV blue light to prevent photoaging. This treatment incorporates TriasorB, a broad-spectrum sunscreen that protects beyond UV rays, including blue light. It thus protects against the acceleration of skin aging. Benefits: Sunscreen: photostable UVB-UVA filters that combat the harmful effects of solar radiation. Ultra-fluid and light texture: allows for easy and airy application. Antioxidant: helps protect cells against free radicals. Water resistant: protects your skin from the harmful effects of the sun even when swimming.