Acne, also known as “pimples”, seriously affects the aesthetics of patients, and in some cases even affects their quality of life, social life, and depression. Photodynamic technology is a new technology that has been internationally recognized as a safe and effective treatment for acne in recent years. Many patients have years of experience with acne and do not know much about this technology, so they have some doubts about the treatment. What is acne all about? Acne is a chronic inflammatory disease involving the skin follicles and sebaceous glands. It occurs during adolescence and is therefore called “acne”. The causes of acne are complex and are the result of a combination of pathogenic factors, including excessive sebum secretion, abnormal epithelial desquamation of hair follicles, proliferation of Propionibacterium acnes and inflammatory reactions. The epidemiological survey of acne this year found that the prevalence of acne among adolescents aged 11-25 is more than 80%, and among young people aged 25-35, it is more than 15%. If left untreated or improperly prevented, it can leave lifelong acne marks and scars that are difficult to heal and affect the appearance. Patients often have anxiety, irritability, lack of self-confidence, leading to a decline in the quality of life, serious impact on the patient’s social function, such as social fear, academic performance, decline, unemployment, etc., so the battle “acne” can not wait. What is photodynamic technology? Photodynamic technology, also known as photodynamic therapy and Ira photodynamic therapy, is a new technology that selectively destroys Propionibacterium acnes and repairs the skin through photodynamic reaction by combining 5-aminoketovaleric acid and corresponding light sources. First, a colorless, odorless, non-irritating photosensitizer “Ira” is applied to the acne-prone area, then the light is blocked with a photosensitizing eardrum and rested for 1-2 hours like a mask on a regular basis, allowing the photosensitizer to slowly and fully penetrate into the hair follicles and sebaceous glands. The photochemical reaction takes place at the onset of the disease, directly killing Propionibacterium acnes, inhibiting sebum production, anti-inflammatory, and promoting collagen synthesis and repair. This is a normal reaction to photodynamic therapy. After the photodynamic therapy is completed, the redness and burning sensation will gradually disappear after 30 minutes of hydrotherapy. Each photodynamic treatment process takes about 3 hours. 10-15 days to do once, most patients can do 3 times to achieve more satisfactory results, some serious patients need several consecutive treatments to achieve satisfactory results. After each treatment, you need to protect yourself from the sun for 2-3 days and minimize going out between 9:00 am and 4:00 pm. What types of acne are suitable for photodynamic therapy? Photodynamic therapy is most suitable for moderate to severe acne with papules, pustules, and nodules; refractory acne that has not been treated with multiple treatments; acne patients with gastrointestinal diseases, poor liver and kidney function, and other underlying diseases; and acne patients who are growing and allergic to antibiotics. Advantages of photodynamic technology: 1, fast, safe, no side effects, no nausea, depression, thirst, etc. for local treatment compared to systemic treatment (oral medication) programs. 2.Reduces sebum secretion and contributes to autologous anti-inflammation to achieve rapid elimination of acne and acne marks. 3.Reducing pores, reducing pigmentation, and smoothing out fine wrinkles in the skin. 4.Enhance skin elasticity and make the skin smooth and moist. 5.The treatment process is gentle and non-irritating, patients feel comfortable, and the treatment is fast and effective.