Unlike a chemical sunscreen, the ingredients in a mineral sunscreen form a barrier on the skin to reflect the sun, sometimes leaving a white cast. Our tip? Apply a few small dots at a time and rub them in evenly on dry skin for best results. One ounce of our Hydrating Sunscreen should be applied to your entire body 15 minutes before sun exposure. 🙌#ReflectToProtect #cerave #MineralSunscreen #HydratingSunscreen #SPF