Description: ISDIN Hydro Oil SPF30 is a biphasic body sunscreen offering high UVB/UVA protection while enhancing your natural tan with Natural Tan Booster, which increases melanin by up to 81%. HOW TO USE? Shake for 5 seconds to blend the phases, then apply generously to dry skin 30 minutes before sun exposure. Reapply every 2 hours or after sweating or swimming.