Generally speaking, the purpose of thin lips can be achieved through makeup. Cover your lips with lip line color and lip concealer products when you make up, which can make your lips look thinner. Of course, you should also pay attention not to bite, lick or tear your lips in your life. These bad habits will make your lips thicker. You can also thin your lips by massage. Knead the upper and lower lips deeply with your index finger and thumb every night and go back and forth several times. It is suggested that you should have a light diet, try to eat less spicy food and drink more water.