Broad Spectrum (UVA/UVB) Sunscreen UVA protection rating: The PA rating measures protection against UVA rays only, and ranges from PA+ to PA++++. UVA rays are so-called “aging” rays. Learn more PA++++ UVB protection rating: The SPF rating measures protection against UVB rays only. UVB rays are so-called "sunburn" rays. SPF 50 Water resistant (80 minutes) Net Wt. 0.21 oz. / 6 g 90-day supply based on typical use