There probably isn’t anyone who don’t know that the sun can damage the skin if exposed to it for too long. Sun damages can cause skin cancer, freckles, wrinkles and skin discoloration. However, the sun contributes to the production of vitamin D in our body, and it also cures acne. So, when is it good to expose yourself to the sun, and for how long?
In a nutshell, the sun emits UVA and UVB rays, which both affect our skin in different ways. The UVA rays are considered more dangerous because they penetrate deeper into the skin and are responsible for pigment changes, wrinkles and even cancer growth. UVB rays are responsible for sunburns and the skin redness that often appears after prolonged exposure to the sun.
Most dermatologists suggest wearing a hat and sunscreen as much as possible when staying outdoors, even if it is a cloudy day. If you are worried about vitamin D, they recommend taking supplements.
As you can see in this video, prolonged exposure to the sun can be quite awful: