There’s a reason why you’re always advised to wear sunscreen on the beach: the sun’s rays can cause serious damage to your skin. Ultraviolet (UV) radiation emitted by the sun is the main reason why. In high quantities or after prolonged exposure, UV rays can cause certain types of skin cancer, as well as the typical sunny day scourge: sunburn.
Once you come home after a day out at the beach, it’s now time to ditch the sunscreen since you’re already adequately protected indoors—or are you? If you think that your average glass windows can shield you from harmful UV rays, you’re completely mistaken.