Newswise — It's never too early to start protecting yourself against sun damage, and if you are a teenage girl this message is especially important.

"Even one blistering sunburn can increase your risk of skin cancer. As few as five sunburns can double your risk of skin cancer," says Dr. Anjali Dahiya, a dermatologist at the Iris Cantor Women's Health Center at NewYork-Presbyterian Hospital/Weill Cornell Medical Center.

Teenage girls should be particularly careful, since melanoma, a potentially fatal skin cancer, is the most common cancer in young women between the ages of 25 and 29. Much of the damage from the sun in these young women will already have occurred in their teens.

"Sun exposure plays a significant role in the development of melanoma. Although more adults are using sunscreens during outdoor activities, many are unaware of how important it is to make sure that their children are getting the necessary skin protection," says Dr. Desiree Ratner, director of dermatologic surgery at NewYork-Presbyterian Hospital/Columbia University Medical Center.

Drs. Dahiya and Ratner recommend the following guidelines to help protect teens and tweens from the harmful effects of the sun:

•Use self-tanning creams. Tanning beds are not good for anyone. Teenagers and young adults looking to get that perfect tan should use tanning creams to get a safe summer glow.

•Be wary of freckles. If you develop freckles on your skin, this may be a sign of sustained sun damage. Freckles generally develop in sun-exposed areas such as the face, chest, and arms, and are more likely to develop in fair-skinned people with blonde or red hair.

•Apply sunscreen generously. Teens and tweens should apply sunscreen to the entire surface of their body about 30 minutes before going outside; if they are swimming, they should reapply once they are out of the water. Be sure the SPF of the sunscreen is 30 or higher, and that it has both UVA and UVB blocking ingredients.

•Minimize exposure to the sun. In addition to applying sunscreen, everyone should be guarding against the sun with hats, sunglasses and umbrellas when appropriate.

NewYork-Presbyterian HospitalNewYork-Presbyterian Hospital, based in New York City, is the nation's largest not-for-profit, non-sectarian hospital, with 2,353 beds. The Hospital has more than 1 million inpatient and outpatient visits in a year, including more than 220,000 visits to its emergency departments -- more than any other area hospital. NewYork-Presbyterian provides state-of-the-art inpatient, ambulatory and preventive care in all areas of medicine at five major centers: NewYork-Presbyterian Hospital/Weill Cornell Medical Center, NewYork-Presbyterian Hospital/Columbia University Medical Center, NewYork-Presbyterian Morgan Stanley Children's Hospital, NewYork-Presbyterian Hospital/The Allen Hospital and NewYork-Presbyterian Hospital/Westchester Division. One of the largest and most comprehensive health care institutions in the world, the Hospital is committed to excellence in patient care, research, education and community service. NewYork-Presbyterian is the #1 hospital in the New York metropolitan area and is consistently ranked among the best academic medical institutions in the nation, according to U.S.News & World Report. The Hospital has academic affiliations with two of the nation's leading medical colleges: Weill Cornell Medical College and Columbia University College of Physicians and Surgeons. For more information, visit www.nyp.org.