Their Baby Bum SPF 50 Sunscreen Roll-On Lotion has a lightweight mineral based formula with non-nano zinc, to help make it easy to protect our squirmy little ones from harmful UV rays. Vitamin E: An antioxidant that helps to neutralize free radicals, which are the main cause of premature skin aging. Sunflower Extracts: Contains antioxidants and vitamins known to provide skin nourishment and hydration and protect and repair against UV radiation.