Everyday exposure to the suns rays will darken and damage your skin. Block & Glow Intensive Whitening Lotion SPF 24 whitens skin and helps block the sun's damaging rays. It has 5in1 Whitening Essentials Vitamin B3 to intensively whiten skin from within SPF 24 to provide 24 times more protection against UVB rays that cause sunburn and skin damage PA to protect against UVA rays that cause long-term skin darkening Radiance Boost to improve skins radiance and glow Skin Refiner to even out skin tone.