A new study by dermatologist Christine Brown at Baylor University Medical Center in Dallas found that the shiny lip glosses, which many women are so fond of, may increase the risk of skin cancer.

Dr. Brown warns that the shiny lip products may attract ultraviolet rays, and notes that sunscreen is necessary to protect the lips, which are one of the most sensitive parts of the body.

"What most people don't realize is they're actually increasing light penetration through the lip surface by applying something clear and shiny to them," Brown says, emphasizing that a recent study found that less 25 percent of Americans wear a form of lip protection.

Dermatologists advise women to wear a sunscreen under their lipstick or lip glosses, to avoid from their negative effects.

Everyone who goes out for more than 20 minutes should apply a lip sunscreen with an SPF of 30 and then keep re-applying it during the day, doctors advise.

People should check their mouth for signs of cancer and consult a dermatologist if they notice something unusual. Go see a doctor if you have a sore on the lip or inside the mouth that doesn't heal, if you notice a lump or a change of color on the lips or on the gums, change in voice, bleeding or numbness in the lip or mouth.