Valley of the Sun Hollywood Style Sun Block SPF 30. During the hot summer heat, dont forget to protect your skin against the suns damaging rays. This high-potency formula provides your first line of defense against the harmful effects of sun exposure. It is estimated that 70 percent of all sun damage occurs during our normal daily activities. For this reason your sun care protection should be comfortable and effective daily use. SPF 30 will give you high covarage against UVA rays (aging), UVB rays (burning), and UVC rays (constant). Apply 20-30 minutes before exposure to sun for maximum protection.