Some people are under the misconception that you only need sunscreen on a hot, sunny day. That, in fact, is not true. You should wear sunscreen anytime during the day, regardless of the cloud cover. This skincare item is a necessary form of protection for people of all ages. So, regardless of where you live, you need sunscreen in your daily routine. To find the best sunscreen, look for three things: safe for sensitive skin, contains zinc oxide, and is water resistant.