Sun and Skin

We all know we need to protect our skin from the sun's harmful rays. Of course, it's impossible to avoid the sun — who wants to hide indoors when it feels so great to get outside and be active? And the sun's not all bad, anyway: Sunlight helps our bodies create vitamin D. So follow these tips when you're outdoors to help manage sun exposure:

• Wear sunscreen with a sun protection factor (SPF) of at least 15, even if it's cloudy or you don't plan on spending a lot of time outdoors. If you sweat a lot or go swimming, reapply sunscreen every 2 to 3 hours (even if the bottle says the sunscreen is waterproof).
• Choose a sunscreen that blocks both UVA and UVB rays. Look for the words "broad spectrum protection" or UVA protection in addition to the SPF of 15 or greater. Select a sunscreen that says "nonacnegenic" or "noncomedogenic" on the label to help keep pores clear.
• The sun's rays are strongest between 10:00 AM and 4:00 PM, so make sure you reapply sunscreen frequently and take breaks indoors if you can. If your shadow is longer than you are tall, then it's a safer time to be in the sun (you should still wear sunscreen, though).
• Apply more sunscreen (with higher SPF) when you're around reflective surfaces like water, snow, or ice.
• We all know that the sun can damage skin, but did you know it can contribute to eye problems, too? Protect your face and eyes with a hat and sunglasses that provide 100% UV protection.
• Some medications, such as prescription acne medications or birth control pills, can increase your sensitivity to the sun, so if you're taking medication, increase your sun protection.
• If you want the glow of a tan, try faking it with self-tanners or salon tanning treatments. Avoid tanning beds, though, because although manufacturers claim that tanning beds are free of UVB rays, they still use harmful UVA rays.

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Cold Sores

Cold sores usually show up as tender "pimples" on the lips. They are caused by a type of herpes virus (HSV-1, which most often is not sexually transmitted) so they are contagious from person to person. Once you get this virus it stays in your body, meaning you'll probably get cold sores every now and then throughout your life. Here are ways you can help prevent cold sores from making an appearance (or reappearance if you've had them in the past):

• Avoid getting cold sores in the first place by not sharing stuff like lip balm, toothbrushes, or drinks with other people who might have cold sores. The virus that causes cold sores is transmitted through the nose (in mucus) and the mouth (in saliva).
• People who have the virus know that cold sores can flare up from things like too much sun, stress, or being sick. Just one more reason to lather on that suntan lotion, eat well, exercise, and get plenty of sleep!

If you do have a cold sore, here are some tips for keeping yourself comfortable:

• Take acetaminophen or ibuprofen if the cold sores are painful.
• Suck on ice pops or cubes to ease pain and keep cold sores cool.
• Stay away from acidic foods (like oranges, tomatoes, and lemonade) and salty, spicy foods, which can cause irritation.
• Don't pick at cold sores while you're waiting for them to go away. They may bleed or become infected with bacteria.

Usually, cold sores go away on their own after a week or two. But if you get them frequently or they're a problem, talk to your doctor or dermatologist, who may be able to prescribe medication to alleviate symptoms and shorten the amount of time cold sores last.

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Eczema

Eczema is a condition that causes skin to become red, itchy, and dry. If you have eczema, you might notice that you are prone to getting itchy rashes — especially in places like where your elbows and knees bend or on your neck and face. The symptoms of eczema can vary from person to person. Though you can't cure eczema forever, you can take steps to prevent it from flaring:

• Stay away from things like harsh detergents, perfumed soaps, and heavily fragranced lotions that tend to irritate the skin and trigger eczema.
• Because water tends to dry out the skin, take short, warm showers and baths. If you're going to have your hands in water for a long time (like when you're washing dishes or your car), try wearing gloves.
• Soothe your skin with regular applications of a fragrance-free moisturizer to prevent itching and dryness. Creams generally moisturize a bit better and last longer than lotions for most people. Creams work best if applied when the skin is slightly wet, like just after bathing.
• Be careful which fabrics you wear. Cotton is good because it's breathable and soft. (But if you are exercising, some of the newer synthetic materials actually keep you drier and are better for you than cotton.) Try to stay away from materials like wool or spandex that may cause irritation or allergic reactions.
• Keep stress in check. Because stress can lead to eczema flares, try activities like yoga or walking after a long day to keep your stress levels low.
• If you wear makeup, look for brands that are free of dyes and fragrances that can aggravate eczema.

If you're having trouble managing your eczema, talk to a dermatologist, who can suggest ways to better control it.

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Other Skin Conditions

Warts are tiny skin infections caused by viruses of the human papilloma virus (HPV) family. There's no way to prevent warts from occurring (other than avoiding contact with people who have them). But if you do get them, don't rub, pick, or scratch them because you can spread the virus and get new warts. Some over-the-counter medications containing special acids can help get rid of warts, but it's always a good idea to see your doctor before trying one. If you find warts in your genital area, you should see your doctor, who can recommend the best treatment method for that sensitive area.

Another type of wart-like viral infection is molluscum contagiosum. (It's not as scary as its name sounds!) Like warts, it can be transmitted through scratching and sexual contact.

Fine white or purplish lines on the skin called stretch marks are pretty common in most teens. Stretch marks are formed when the tissue under your skin is pulled by rapid growth or stretching, like during puberty. Stretch marks usually fade on their own over time. Talk to a dermatologist if you're concerned about them.

Because our skin is the most visible reflection of what's going on in our bodies, people equate healthy skin with beauty. But healthy skin is about more than just good looks; it's essential to our survival. So keep your skin glowing with the right skin care techniques and by eating well and getting lots of exercise.

Reviewed by: Eliot N. Mostow, MD, MPH
Date reviewed: April 2007

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