The sun emits 3 kinds of radiation: UVC, UVA, and UVB radiation. UVA & UVB radiation poses the biggest threat to us because they are not fully absorbed by the ozone layer, like UVC Radiation is. UVB radiation affects the upper layer of skin called the epidermis and is what causes sunburn. It is the most severe when the sun is at its brightest, especially during the summer, when most of us are exposed to the sun. UVA radiation has been shown to be a huge contributor to sun damage as it penetrates deeper into the skin than UVB radiation does. Sunscreen is needed to lessen the damage of these types of radiation and here is why:
The Ozone layer is weakening
The ozone layer is a part of the Earth’s stratosphere that absorbs UVC radiation and some UVB radiation. With the ozone layer diminishing the earth’s surface is being exposed to more and more radiation, making it more important than ever to protect your skin.
Reduces the risk of developing skin cancer.
Although this is something we might all know, it is something that needs to be reiterated. Sun damage is one of the major causes of skin cancer. Regular use of SPF15 sunscreen can lower the chances of you developing melanoma and squamous cell carcinoma by around 40 percent and 50 percent, respectively. Your skin can also develop wart-like lesions which, although not carcinogenic, can be unpleasant.
Prevent sunburns and other sun damage.
Not only is sunburning an eyesore, but it can also be painful and can lead to permanent skin damage such as the increased risk of melanoma and wrinkling. There is a misconception that people who are darker in skin tone or don’t burn easily, will not need to wear sunscreen. This is untrue and sun damage affects all skin types and therefore protection is necessary for everyone.
Prevent Premature Aging.
Continued sun exposure can cause your skin to age prematurely with the presence of fine lines, moles, wrinkles, and sagging. Collagen is a structural component of your skin, that gives skin its firmness and elasticity. As we age we naturally produce less collagen, leading to wrinkles and dry skin. UV radiation penetrates the dermis, the middle layer of our skin, and produces excess elastin. The body then tries to break this down and in the process breaks down collagen as well. Continued exposure causes the collagen to break down faster than normal aging, causing discolored, leathery and saggy skin.