A study was done based on whether the umbrella really protects you. Hao Ouyang ran a study to see what form of sun protection is the most effective. He started the experiment by giving a set of people 100 SPF and the other set beach umbrellas. These people were told to either wear this sunscreen and stay in the sun, or to stay in the shade
A study was done based on whether the umbrella really protects you. Hao Ouyang ran a study to see what form of sun protection is the most effective. He started the experiment by giving a set of people 100 SPF and the other set beach umbrellas. These people were told to either wear this sunscreen and stay in the sun, or to stay in the shade