To ensure your skin is fully protected and the sunscreen absorbs completely, start off with a modest amount. Rub it into all areas of your face and body (but avoid the eyes). Make sure to reapply every two hours or more often after swimming, drying yourself off with a towel, or sweating from physical activity. Don't forget that you need sunscreen regardless of whether there are clouds out - protect yourself daily. Additionally, try not to be outside in direct sunlight between 11am-2pm when UV rays are at their strongest.