Man or woman? In fact, the thickness of lips is not a defect, or even a flaw. If a man's lips are thicker, then many people will look simple and honest, and such a man will have a sense of calmness in women's minds; If a woman's lips are thick, many will look sexy. Looks like thick lips are an advantage.

If you really want to change, it is estimated that you have to go to plastic surgery. But if you don't really care, don't go, because even if you have proper plastic surgery, your lips won't feel comfortable, because it's unnatural.

You can grin a little at ordinary times, which will make you look thinner.

To tell the truth, I adjusted this answer. Actually, my lips are thick, too. But after reading this, I think there is nothing wrong with thick lips.