Wearing sunscreen every day is a breeze when you have non-greasy, easy-to-wear formulas. SPF stands for “Sun Protection Factor”. When you wear sunscreen with broad spectrum every day, you could reduce your risk of skin cancer. Wear alone or under your makeup for healthy and youthful skin. Korean skin care sunscreen is used to block UVA rays that come through windows and darkens skin. Innisfree sunscreen also blocks UVB rays that causes sunburn and skin cancer. UV rays from the sun can cause premature wrinkles, pigmentation and dull skin. There are physical and chemical uv creams. Physical Asian sunscreen, also referred to as "traditional" korean sun cream, sits on top of skin and can leave a white cast to reflect UV rays. To rid skin of physical Korean SPF moisturizers you must double-cleanse. Chemical Korean sunscreens do not leave a white case but need to be applied 20 minutes prior to exposure\. You can use a mixture of both physical and chemical Korean SPFs but must be applied 20 minutes before.