Preventing Sun Damage
The best way to lower your risk of skin cancer is to protect your skin from the sun and UV light. That means avoiding excess sun exposure, especially in midday when the sun is strongest.
Wear sunscreen. The use of sunscreens is complex, and everyone should understand how and when to use them. Follow instructions closely and reapply as directed after swimming or sweating. Use an SPF of at least 29 or a physical block, such as titanium dioxide, for maximum protection.
The following are some specific guidelines for avoiding excessive sun exposure:
1.) Use sunscreens that block out both UVA and UVB radiation. Do not rely on sunscreen alone for sun protection. Also wear protective clothing and sunglasses.
2.) Avoid sun exposure, particularly during the hours of 10 a.m. to 4 p.m., when UV rays are the strongest.
3.) Use precautions, even on cloudy days. Clouds and haze do not protect you from the sun, and in some cases may intensify UVB rays.
4.) Avoid reflective surfaces such as water, sand, concrete, and white-painted areas.
5.) UV intensity depends on the angle of the sun, not heat or brightness. The dangers are greater closer to the start of summer.
6.) Avoid sun lamps, tanning beds, and tanning salons. The machines use mostly high-output UVA rays.