Acne vulgaris (hereafter referred to as acne) is a chronic inflammatory skin disease that occurs in the sebaceous glands of hair follicles. Since there is a process of recognizing the disease, folklore has given the disease many different names in the process of recognizing it. The most common aliases are acne, acne vulgaris, acne pimples, etc. In Chinese medicine, acne is called “lung wind and wine pimples”, and in Hong Kong and Taiwan, acne is also called “dark sores”. The pathogenesis of acne: 1. Endocrine factors: mainly androgens. 2, biological factors: Propionibacterium acnes is an anaerobic bacterium present in the hair follicle, which produces lysozyme in a relatively anoxic environment, and lysozyme can break down triglycerides in sebum, called free fatty acids, which can erode and destroy the hair follicle wall so that the inclusions of the hair follicle enter the dermis, causing perifollicular sebaceous inflammation. 3, other factors: often consume high-fat, high-sugar food, poor digestion and constipation, mental tension, etc. How to get rid of acne with red and blue light? We know that Propionibacterium acnes is the main culprit in the development of acne and plays a role in the development of acne, so classical treatment uses antibiotics to kill this bacteria that can cause and aggravate acne. However, this bacterium easily builds up resistance to various antibiotics, making the treatment ineffective. The professional red and blue light acne treatment system emits blue and red light of about 410nm. Candidates only need to lie quietly for 15-20 minutes to receive this treatment. There are no side effects and no discomfort during the treatment. During the treatment, you can also listen to music to relax your mind. In fact, the treatment is so comfortable that some people go to sleep during the treatment. What’s more, many people with mild acne only need this phototherapy, without the need for additional medication, thus relieving many people of the fear of taking medication for long periods of time, and solving the distress of some people who suffer from skin irritation caused by topical medication. Of course, one treatment is not enough to control and cure acne. The standard treatment is two treatments per week, with a course of 8-10 consecutive treatments. This is, of course, the only drawback of this treatment: many people do not have much time for this safe treatment. If the condition is severe it is still necessary to combine other treatments, as the combined treatment will bring the condition under control as soon as possible and avoid the formation of scarring in the future. Red light is the longest wavelength of visible light to the naked eye and has the strongest penetrating power. It can penetrate 8~10mm deep under the dermis, so it is most widely used. In clinical practice, red and blue light treatment for acne is very effective. Generally, red light can make the skin anti-inflammatory and repair; blue light can inhibit sebaceous gland secretion, reduce the number of acne and inflammatory lesions, and promote tissue repair. People who have undergone red and blue light treatment describe it as feeling like burying their faces in the red and blue light tubes, as if they were having a SPA beauty treatment, which feels quite warm. In the process of red and blue light treatment for acne, the intense light pulses generate a kind of heat, which can make the pores expand and thus increase the concentration of oxygen in the hair follicles, which is very beneficial for the skin’s metabolism. The increase in oxygen concentration is very beneficial to the skin’s metabolism. A strong skin metabolism helps metabolize the aging skin and creates new skin epidermis, thus treating acne and healing acne pigmentation scars quickly and effectively. Therefore, using red and blue light to treat acne is a good choice. Although the effect of red and blue light treatment for acne is ideal, it should be noted that acne cannot be eradicated through a single treatment. Therefore, in order to avoid recurrence of acne, people need to undergo several red and blue light treatments in order to achieve the ideal treatment effect, and the specific number of treatments has a great relationship with their own body type.