However, much of the UV exposure we get is from these types of activities. Sun Facts Protecting your skin during the first 18 years of life can reduce the risk of some types of skin cancer by up to 78 percent. Up to 80 percent of the sun's rays can penetrate light clouds, mist, and fog. One severe sunburn during the first 15 years of life can double the risk of skin cancer. Cataracts, once thought to be a part of aging, are also associated with UV exposure.
Snow reflects the sun like a mirror.
Concrete reflects 10 to 12 percent of the sun's rays. Wear protective clothing consisting of a broad-brimmed hat and a long sleeved shirt or blouse when sun exposure is unavoidable. The window glass will block out most of the harmful rays of the sun. Remember, any activity that promotes tanning also produces the harmful effects to the skin. To be effective such creams or lotions should be reapplied again after swimming and at midday.