
How to treat acne
I've had acne on my face for quite a while, and it keeps recurring. It's red with pus spots, and sometimes painful. I've tried various skincare products, but none have worked. Can you advise me on how to treat it?

Acne, commonly known as pimples, is a common skin condition that primarily occurs on areas of the skin with a high density of sebaceous glands, such as the face, back, and chest. The treatment of acne is a comprehensive process that requires patients to address multiple aspects including lifestyle habits, medication, and professional treatments.
Patients should maintain a light diet, reduce intake of high-fat foods, carbohydrates, and spicy or irritating foods, consume more fruits and vegetables, ensure adequate hydration, and develop a daily bowel movement habit to help eliminate toxins from the body. Additionally, maintaining facial cleanliness is important. Use mild facial cleansers and skincare products daily, and avoid cosmetics and cleansers containing irritating ingredients.
Use topical medications containing benzalkonium chloride, salicylic acid, or benzoyl peroxide as directed by a physician. These medications can reduce sebum secretion, inhibit bacterial growth, and help remove dead skin cells that clog pores. For difficult-to-control acne, doctors may prescribe potent medications such as isotretinoin. These medications are effective but can have significant side effects and must be used under strict medical supervision.
For severe or complex cases of acne, professional treatments may be considered under a doctor's guidance, such as laser therapy, ultrasound therapy, and photodynamic therapy. These treatment methods can promote skin regeneration and repair, and help reduce inflammation and infection.