Spring is finally here, and with summer quickly approaching you’re probably thinking about spending more time outdoors. If you do, it’s crucial that you wear sunscreen at all times, because the sun can not only cause sunburn, it can also contribute to the risk of developing skin cancer, as well as speed up the signs of aging. But how much sunscreen do you really need? Is it sufficient to put some on before you go out, or do you need to reapply it during the day? How high an SPF do you need to be protected? And, is the sunscreen included in many cosmetic and skincare products enough, or do you need to use a separate sunscreen? Read on for the answers to these questions and more.