Azur® Advanced Pro-Cellular Sunscreen is very water resistant and free of hormone influencing chemicals, making it great for kids and healthy lifestyles. Azur® Advanced Pro-Cellular Sunscreen is designed to naturally protect your endocrine system while it protects you from UV radiation and sunburn. Conventional sunscreens contain ingredients that may interfere with your bodys normal chemistry and disrupt your bodys ability to repair itself. Growing evidence suggests that those ingredients pose a risk of causing cancer and other health problems. Eliminating those harmful chemicals & ingredients allows your cells to function the way nature intended.