|Even though the sun feels great on your skin, it causes premature skin aging,
skin cancer, and various splotches, and wrinkles. The most obvious sign that
we've damaged our skin is sunburn.
The sunlight reaching the earth contains ultraviolet radiation. Sunlight has UVA, UVB, and UVC waves.
The above descriptions of UVA and UVB rays are important to understand when we discuss effective sunscreens later.
When you are on the beach or out on the water in a boat, the white beach sand and the surface of the water act like solar reflectors. UVA and UVB rays bounce off the sand and water and hit you from all sides and all angles. It's like being in a solar oven. That's why you will get sunburned even when you are under an umbrella.
What exactly does the sun do to your skin, other than sunburn?