We all know better than to head to the beach without a bottle of sunscreen. What some of us might not know, however, is that ultraviolet radiation can cause skin damage any time you leave your house -- even in the car. Accordingly, dermatologists recommend that you use sunscreen every day to combat the many ways the sun can hurt your skin. The sun's rays harm you by penetrating deep into the skin, damaging DNA, destroying collagen and depleting your outer layer of essential nutrients like vitamin A. Even a few severe sunburns from childhood can put you at a higher risk of developing skin cancer as an adult, so parents should be particularly concerned for their children.
Over time, UV radiation also results in wrinkles, skin discoloration and spots, adding years to your appearance. And while sunscreen can go a long way towards protecting your skin from damage, you need to make sure to use it correctly. To start, look for sunscreen that offers broad-spectrum protection, which means that it blocks both UVA and UVB rays. Sunscreens with a higher sun protection factor (SPF) will block a higher percentage of UVB rays -- an SPF 45 lotion, for example, blocks out about 99 percent of them [source: Barrett]. Also, make sure to reapply the sunscreen evenly and regularly. Now that there are spray-on sunscreens as well as lotions and even bug sprays that offer UV protection, it's easier than ever to keep your skin healthy and looking great.
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- American Cancer Society. "Skin Cancer Facts." July 6, 2009. (9/5/2009)http://www.cancer.org/docroot/PED/content/ped_7_1_What_You_Need_To_Know_About_Skin_Cancer.asp
- Arlette, John. "Your sun protection primer." The Montreal Gazette. (9/5/2009)http://www.montrealgazette.com/health/Your+protection+primer/1845207/story.html
- Bailly, Jenny. "The Clear-Skin Makeover." Good Housekeeping. (9/2/2009)http://www.goodhousekeeping.com/beauty/skin/clear-skin-makeover?click=main_sr
- Barrett, Jennifer. "New Secrets for Youthful Skin." Newsweek. April 24, 2006. (9/2/2009)http://www.newsweek.com/id/47086
- Baumann, Leslie. "Solutions for Dry Skin, Wrinkles and More." ABC News. March 10, 2006. (9/2/2009)http://abcnews.go.com/GMA/BeautySecrets/story?id=1709371
- BBC News. "Smoking ages skin across the body." March 21, 2007. (9/5/2009)http://news.bbc.co.uk/2/hi/health/6466041.stm
- Bianco, Robert. "Buddy Ebsen, a man of many talents." USA Today. July 7, 2003. (9/2/2009)http://www.usatoday.com/life/2003-07-07-buddy_x.htm
- Bligard, Carey A. "Treating dry skin: quenching your skin's thirst for moisture." Examiner.com. Aug. 22, 2009. (9/2/2009)http://www.examiner.com/x-7153-Des-Moines-Health-and-Beauty-Examiner~y2009m8d22-Treating-dry-skin-quenching-your-skins-thirst-for-moisture
- CBC News. "Ancient Roman cosmetics resembled modern moisturizer." Nov. 3, 2004. (9/2/2009)http://www.cbc.ca/health/story/2004/11/03/Roman_cosmetic041103.html
- Chitramala. "Avoid overnight make-up to maintain your natural beauty." July 5, 2008. (9/2/20099)http://www.chitramala.com/news/avoid-overnight-106364.html
- Everyday Health. "15 Cities That Are Tough on Skin." (9/5/2009)http://www.everydayhealth.com/photogallery/cities-tough-on-skin.aspx
- Gibson, Lawrence E. "Smoking: Does it cause wrinkles?" Mayo Clinic. Oct. 25, 2007. (9/2/2009)http://www.mayoclinic.com/health/smoking/AN00644
- Haran, Christine. "Healthy Woman: Healing Dry Skin." ABC News. Oct. 29, 2004. (9/2/2009)http://abcnews.go.com/GMA/BeautySecrets/story?id=128160&page=1
- Hubbell, Lisa Jaffe. "Coming Clean - Dermatologist's Book Scrubs Away Myths About Skin Care." Dec. 1, 1999. (9/2/2009)http://community.seattletimes.nwsource.com/archive/?date=19991201&slug=2998623
- National Geographic. "Skin." (9/5/2009).http://science.nationalgeographic.com/science/health-and-human-body/human-body/skin-article.html
- Markey, Sean. "20 Things You Didn't Know About... Skin." Discover Magazine. Feb. 6, 2007. (9/2/2009)http://discovermagazine.com/2007/feb/20-things-skin/
- Mouss, Sharry. "Bad skin may be environment." Tahlequah Daily Press. August 17, 2009. (9/2/2009)http://www.tahlequahdailypress.com/features/local_story_229101846.html?start:int=0
- Reuters. "It's not just your face - smoking ages skin: study." March 19, 2007. (9/2/2009)http://www.reuters.com/article/healthNews/idUSN1928703920070319
- Sweeney, Camille. "It's Cold and Your Skin is Suffering. So What Are You Doing to Moisturize?" New York Times. Feb. 4, 2009. (9/2/2009)http://www.nytimes.com/2009/02/05/fashion/05skin.html?_r=1&scp=3&sq=moisturize&st=cse
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