The lips will not get thinner if you purse your lips often. The thickness of the lips, in general, is only related to one condition, namely genes. In general, genes determine the thickness of the lips, may be such and race-related, black lips are relatively thick, so pursed lips habit and the thickness of the lips is not any relationship. But it should be noted that frequent pursing is not a particularly good habit, because people who purse their lips often may often suffer from chronic lip inflammation, because repeated pursing may expose the saliva in the mouth on the lips, so that the lips are relatively dry or wet alternately, so that the appearance of lip inflammation, so it is recommended that people who have the habit of pursing their lips try to quit this habit.