anytime and always. Even when the sun is not out or shining, you can still get harmful uv rays. They say to put light sun block on you face and exposed areas everyday, especially the face because it can help keep away fine lines and wrinkles.
Ozone layer depletion causes UV to enter. We must protect ourselves from its harmful actions.
We use sunscreen to protect ourselves from ultraviolet (UV) waves, specifically UVA and UVB rays. These rays can penetrate the skin and cause damage, leading to sunburn, premature aging, and an increased risk of skin cancer. Apply sunscreen regularly to help protect your skin from harmful UV waves.
Simply by wearing lots of sunscreen.
To protect yourself, curb CFC's. They are the ones causing depletion.
To protect yourself, curb CFC's. They are the ones that destroy ozone.
Get window wallpaper with UV protection.
The recommended SPF level for a cotton shirt to protect against harmful UV rays is at least SPF 30.
Yes, polarized sunglasses effectively protect your eyes from harmful UV rays and reduce glare by blocking horizontal light waves.
Yes, it will. It will protect against the harmful UV rays of the sun.
The ozone protect us from harmful UV rays of the sun. These are fatal radiations.
UVB exposure is a major cause of skin cancer.
The answer will depend on the level of exposure and the amount of protection required. You can protect yourself completely by staying indoors in a windowless room. You will probably get scurvy because some UV is needed to help the body synthesis vitamin D. Reasonable protection is offered by normal clothes and UV sun cream for those areas exposed to particularly strong sunlight. Also, spending all your evenings in a UV lit disco is not a good idea!