Acne is the most common skin disease in adolescence. 1, cleans the skin. According to the characteristics of patients with oily skin, neutral alkaline soap (such as Lux and Xia Shilian soap) and facial cleanser only suitable for oily skin are used alternately in the morning and before going to bed. 2. Clear pores. When acne appears on the face, hit a basin of hot water, put the face washed by facial cleanser or fine sand scrub into rising steam, then wrap the face with a big towel for 3 minutes to promote the opening of pores, and then gently squeeze the skin on the edge of acne with the needle cap or acne remover of medical injection needle (No.5-7) disinfected with 75% alcohol cotton ball in advance to squeeze out the acne. 3. Avoid using oily or powdery cosmetics, and use water quality care products as appropriate, especially avoiding heavy makeup. Before going to bed, you should completely remove the cosmetics of the day and avoid applying nutritional cream and ointment. Before going to bed, let your skin relax, smooth and breathe fully at night.

4. Avoid touching the acne that has grown by hand or trying to cover the rash with hair and foundation cream, especially to overcome the bad habit of squeezing and pressing acne by hand. 5. Eat less fat, high sugar, spicy fried foods and stimulating drinks such as liquor and coffee, eat more vegetables and fruits, and drink more boiled water. 6. Insist on doing more large-scale exercises in the city. There are many reasons for acne.

Internal factors:

1. Excessive androgen secretion: Excessive androgen secretion is the main cause of acne, especially in adolescence.

2. It is related to women's physiological cycle: some women get worse blisters before menstruation. Mainly related to changes in hormone secretion.

3. Internal diseases or dysfunction of the body. Mental stress, excessive fatigue, lack of sleep, etc.

6. Overeating greasy, hot and sour food and sweets.

External factors:

1. Improper cleaning: causing pore blockage and bacterial infection.

2. Improper squeezing, picking and needle picking: Some people have acne and squeeze at will, causing bacterial infection.

3. Apply inferior cosmetics, such as dual-purpose powder and foundation.

4. Ultraviolet rays and some chemicals. Therefore, the first thing to treat is to minimize the factors that cause acne! And control it with drugs! Such as tretinoin and vitamins! If there is infection, you can use some anti-inflammatory drugs!