Acne is a common phenomenon resulting from endocrine changes during adolescence, primarily due to changes in sex hormones. Long-term treatment is required to control the lesions. Medications for acne need 4-6 weeks to take effect, and there are no immediately effective emergency medications. Moreover, after the lesions are effectively controlled, it is important to adhere to treatment to prevent recurrence. Acne can be controlled after treatment, but it is difficult to completely subside. Acne can periodically worsen or decrease with the body’s endocrine changes. As age increases, acne tends to remit. 1. Skin care: (1) Pay attention to cleanliness: Clean the affected area twice a day with warm water and a de-fatting and anti-inflammatory cleanser, gently pat dry and then apply medication for acne. Note that frequent face washing will cleanse the facial oil while making the skin surface water loss, resulting in an imbalance of water and oil on the skin surface, which will cause more oil in the T-zone of the face, and at the same time will destroy the skin barrier and aggravate acne. (2) Don’t squeeze and dig the lesions: traumatic lesions will lead to inflammation expansion and prolonged healing, and will also destroy the epithelium of the hair follicle to increase the chance of scar formation. (3) Proper use of cosmetics, preferably according to the doctor’s advice to use the appropriate cosmetics. It is best to use cleansers and skin care products with oil control, anti-inflammatory and other acne prevention effects, and not to use oil-based makeup and skin care products that can trigger acne. (4) If you use medications that contain photosensitive ingredients, you should use a sunscreen or sunblock. (5) Sun exposure will aggravate the pigmentation (acne marks) left after inflammatory acne subsides, so acne patients should use sunscreen. If you do not have sensitive skin, it is best to use chemical sunscreens because they are less likely to clog pores and produce acne. 2. Life guidance: (1) Avoid emotional tension and keep a happy mood. (2) Diet: The results of the latest study found that certain foods have an effect on acne. The results of the study showed that the number of lesions and the remission of inflammation in acne after dietary intervention were statistically significant compared to the control group. Therefore, if a certain diet can significantly trigger or worsen acne in patients, these diets should be absolutely restricted. These foods include spicy and irritating foods, high-fat foods, seafood, mangoes, and supplements. Acne-prone people avoid foods such as chocolate, nuts, cheese, coffee, and desserts. (3) Ensure sufficient sleep and regular diet and living. (4) Take more vegetables and fruits with high vitamin C content as well as coarse fiber foods to keep your bowels open.