Yes. Whether you are outdoors directly under the sun or even while being indoors, you are exposing yourself to potentially skin-damaging light, be it through windows or your digital screens. Sunscreen protects your skin from UVA/UVB rays, it lowers your skin cancer risk, it prevents premature ageing of the skin (fine lines, wrinkles and pigmentation) and it helps maintain an even skin tone. It is important to wear sunscreen daily. Your skin will thank you for this, down the line!