People's lips turn outwards, exposing a part of mucous membrane. If the mucous membrane is too convex, the lips will be too thick. The so-called "thick lips" means that the male upper lip is more than 9 mm thick and the lower lip is more than 10.5 mm thick; Female upper lip is more than 8 mm and lower lip is more than 9 mm.
The thinning of thick lips is to cut off an oral mucosa and muscle in a spindle or zigzag shape at the junction of the skin and mucosa of the upper and lower lips, and then make a suture incision directly to make thick lips thinner. The scar of the surgical incision is hidden in the mouth and the effect is ideal.