ISDIN Fotoprotector Fusion Fluid SPF 50+ is a daily facial sunscreen with an ultralight texture that provides very high UV protection. It features a mattifying, non-greasy formula that absorbs quickly and leaves no white residue while delivering anti-aging benefits through ingredients like hyaluronic acid and vitamin E. The product should be applied liberally to dry skin 30 minutes before sun exposure, using approximately 2 mg/cm² to achieve the stated SPF protection. Reapplication is recommended every 2 hours or after swimming, sweating, or towel drying. The formula is designed for delicate sun-sensitive areas and provides a shine-free finish without drying out the skin.