A sun shade or sun visor is any good at preventing skin cancer?

All shade helps. The more shade you give your skin, the better. Sunscreens help up to a point but keeping the sun off your skin is the best.
A good start. Exposure to ultraviolet radiation from the sun is the greatest risk factor for developing skin cancers. Any way you reduce your exposure will reduce your risks of developing skin cancers. This includes protective clothing and sun screen on exposed skin.

Related Questions

How does sun cream help prevent skin cancer?

Sunblock blocks sun. Sun damage causes damage to the skin which leads to skin cancer. Sun block and sun proof clothing prevent the damaging portion of light from damaging the skin's dna. It also prevents the premature aging of skin which occurs with sun damage. Read more...
Block UV Radiation. Sunscreens work by blocking ultraviolet radiation from sunlight. Ultraviolet radiation is one of the primary causes of all 3 major types of skin cancer--basal cell cancer, squamous cell cancer, and melanoma. Read more...
Prevents sunburns. Sun screen prevents the uv radiation from the skin from damaging the skin cells. When you get a sun burn the dna in your skin is damaged, and these mutations are what is thought to cause melanoma. Read more...
Sunscreen. . Sunscreen helps reduce the amount of ultraviolet radiation absorbed by the skin. It is this radiation that causes normal cells to transform into cancerous cells. Read more...

What is most likely the lowest SPF sun tanning lotion one can use to prevent skin cancer and still obtain a tan for people with light colored skin?

Be cautious. The most common forms of skin cancer are related to sun exposure and the resultant cellular damage from uv light which has long term effects on the skin. Therefore, any exposure especially in people with a more fair complexion can be harmful. To reduce your chances, you should limit exposure time and high intensity (midday), use a good physical sunblock at least 15-30spf and reapply it often. Read more...
Spray tan. If you really feel the need for a tan, use a spray tan and don't skimp on protecting your skin from UV radiation. If you have light skin, you likely burn easily and are at a higher risk as is. . Read more...

Hi! What causes skin cancer uvb or uva? If uvb how could we get vitD from sun exposure if we prevent uvb rays cz they only make our skin produce vitD?

Excellent question. You are right! We were designed to live under the sun and that is exactly how we make vitamin D in the body. Judicious exposure to sunlight is the answer. When you develop a tan, it protects you. Read more...

Do even lipsticks contain sunscreen with SPF 30? are lip balms really effective in preventing tanning or skin cancer? Some good medicinal brands?

Some do, some don't. Some make-ups contain SPF's, but many don't. You have to read each individual ones list of ingredients to see if that one has SPF in it and if so, how much. Most that do advertise this prominently, because it is such a good and important feature of the item. Read more...