#KylieJennerChallenge Craze Sucks Up Social Media, Leaving Teens Swollen and Scarred!

The popular technique most teens seem to be trying to get a plump pout is putting their lips inside a small glass and sucking as hard as they can.

Dr. David Alessi of the Alessi Institutes in Beverly Hills says this form of “lip plumping” happens because the pressure causes intravascular fluids to leak into the surrounding tissues, and usually doesn't just swell the lips. A telltale sign is the cup leaves a ring around the mouth, which can be seen in a lot of the photos.

If the pressure is too great, Dr. Alessi says a ruptured blood vessel can occur and cause a hematoma (deep bruise). It is unlikely that anything too serious would occur besides looking silly, but with any significant tissue damage, ulceration and scarring can occur. The plump lips can last anywhere from a few hours to several days.

Kylie Jenner has denied that her lips are surgically enhanced, and confessed on “Keeping up with the Kardashians” to simply lining her lips to achieve a fuller look.

Like most 17-year-olds, Jenner already has a youthful plumpness to her lips and doesn't really need anything to make them fuller.

If you do want to pump them up, Dr. Alessi suggests doing it creatively. The right lipstick or makeup can make the lips appear fuller, or try out a lip plumper polish that you can find at most cosmetic stores. These products typically use a mildly irritating substance that causes some lip swelling (such as menthol or cinnamon) and are harmless unless you are allergic to any of the ingredients.

Kylie Jenner has responded to the #kyliejennerchallenge on her Twitter account: