When should I apply sunscreen?

One should apply sunscreen every day to exposed skin, even if you are not going to be outside in the sun. While some of the suns ultraviolet rays cannot penetrate glass windows, some can, leaving you prone to these damaging effects if unprotected.

For days when you will be indoors, apply sunscreen on the areas not covered by clothing, such as the face and hands. Sunscreens can be applied under makeup, or alternatively, there are many cosmetic products available that contain sunscreens for daily use. Sun protection is the best means of preventing premature aging and skin cancer.
Don’t reserve the use of sunscreen only for sunny days. Even on a cloudy day, up to 80 percent of the sun’s ultraviolet rays can pass through the clouds. In addition, sand reflects 25 percent of the sun’s rays and snow reflects 80 percent of the sun’s rays.


2 thoughts on “When should I apply sunscreen?

  1. II have a scar on my right cheek from a large mole removed when I was three years old. It was itchy and the bumpy red part bled when scratched. Turns out it was Basal Cell Carcinoma.

    • Thanks for your comment, which raises a very important point that I see in clinical practice regularly. We are living and changing beings. That being said, something that is fine, even for many years or many decades, may not always remain that way. Although not common, skin cancers can develop within injured skin, such as scars. Additionally, scars often are fairer in color (are lighter skin color), thus further increasing the risk of the development of skin cancer. Basal cell carcinoma often appears as a pimple or a pearly bump that often bleeds easily. In many cases, the bump heals and rebleeds again in the future.

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