On May 24, 2010, a study was released by the Environmental Working Group (EWG) stating that more than half of all popular sunscreens may actually increase the speed at which malignant cells develop and spread skin cancer because they contain vitamin A or its derivatives retinol and retinyl palmitate. In fact only 39 out of more than 500 products examined were considered safe and effective. Tumors and lesions developed up to 21 percent faster in lab animals coated in a vitamin A-laced cream t…