What causes upper lip acne?

The upper lip acne is mainly caused by the following reasons. 1. Improper diet: In normal life, you like to eat greasy, spicy and other irritating foods. Because these foods contain too much toxin, they directly affect the digestive system of the body, causing upper lip acne. 2. Irregular work and rest: Since ten o'clock in the evening is the time for liver detoxification, if you often stay up late, you will miss the time for liver detoxification, so it will cause upper lip acne. 3. Brushing: Brush your teeth with fluoride toothpaste for a long time, it will stimulate the upper lip, so it will cause acne;4. Excessive mental stress: long-term life and work pressure, so that the spirit is often in a state of tension and anxiety, but also can cause acne on the upper lip.