A birthmark is a colored mark on or under the skin that's present at birth or develops shortly after birth.Some birthmarks fade with time; others become more pronounced. Birthmarks may be caused by extra pigment-producing cells in the skin or by blood vessels that do not grow normally. birthmark is a colored mark on or under the skin that's present at birth or develops shortly after birth.Some birthmarks fade with time; others become more pronounced. Birthmarks may be caused by extra pigment-producing cells in the skin or by blood vessels that do not grow normally.
Cupid's bow feature on a human lip. The Cupid's bow is a facial feature where the double curve of a human upper lip is said to resemble the bow of Cupid, the Roman god of erotic love. The peaks of the bow coincide with the philtral columns giving a prominent bow appearance to the lip.
Full Face CPAP Mask Overview. Full face CPAP masks seal around your nose and mouth in the shape of a triangle and are held in place by four point headgear. These masks are used by people who breathe through their mouth during sleep and do not wish to use, or have not had success with, a nasal mask and chinstrap.