Move to the shade -the correct answer is move to the shade.while all 3 actions help, getting out of the mid-day sun is the best choice in this situation. seeking shade is a key element in preventing skin cancer, especially between 10:00 a.m. and 4:00 p.m. the sundress blocks very little uv radiation because its made of cotton. it compares to a sunscreen rated spf 4. covering up is the right idea, but dark colors, tight weaves, and clothing labeled at least upf 30 work better.sunscreen should not be used to extend your time in intense sunlight. its an important part of a larger strategy that the american cancer society recommends to protect your skin, but it does not provide total protection. to get the most from sunscreen, choose products of spf 15 or higher that block both uva and uvb rays, reapply at least every 2 hours, and use at least 1 ounce or a palmful for an adult.