The nd yag medical beauty equipment laser beauty instrument removes human pigment spots. The principle is to use the selective photothermal effect of the 1064nm band laser to release the energy in a very short time, and the human pigment group absorbs the high-energy laser in an instant It expands rapidly and breaks into small particles. These small particles can be phagocytosed by macrophages in the human body and excreted from the body, so that the pigment gradually becomes lighter, and finally disappears to achieve the purpose of treatment. For some substances with carbon as the main component, such as charcoal, graphite, etc., the laser can also give them high energy in an instant, so that they can be exploded and broken and gasified at high temperature in an instant. The laser beauty instrument instantly irradiates the color material in the text, which can eliminate some types of printed text with less damage to the paper.

Medical cosmetology devices for treatment use various physiological factors such as lasers, electrodes, radio frequency, photodynamics, carbon dioxide, ultrasound and mechanical resonance to act on the human body to produce various physiological effects in the body to achieve the purpose of treatment. Laser technology is widely used in hair removal, eyebrow washing, wrinkle removal, improvement of pigmented spots, treatment of black moles, spider telangiectasia, fat dissolving, acupoint therapy and other medical beauty equipment beauty projects. The laser has the characteristics of monochromaticity, high brightness and one-way transmission. It uses monochromatic light with strong penetrating power to focus on human or biological skin tissue, and removes damaged and target tissue through biological stimulation and high heat. Radio frequency technology is mainly used in fat reduction and pigmentation treatment, such as radio frequency fat dissolving instrument and photon radio frequency skin rejuvenation instrument. The treatment system of medical beauty equipment is composed of a control host and an electrode. The control host generates high-frequency wireless electromagnetic waves to the electrodes, and a small radio wave field is generated between the emitter and the receiver. The radio waves make the ions in the tissue oscillate rapidly, resulting in The thermal energy acts on the target tissue, thereby destroying the cells and causing the tissue to shrink. The principle of ultrasonic technology is similar to that of radio frequency technology, both of which are the selective electro-pyrolysis of target cells through the principle of pyrolysis, which is called "selective electro-thermal action". Ultrasonic focusing causes fat cells to vibrate and rub physically, generate high heat, and form a cold stimulus with the outside, thereby accelerating blood circulation and reducing fat and shaping. The medical beauty devices represented by electrode technology include radio wave therapy instruments and iontophoresis beauty instruments, which are usually composed of a host, a display, buttons, wires and electrodes. Under the action of the electric field, the essence is electrolyzed into an ionic state, and the drug ions are introduced into the target tissue by using the principle of repulsion of the same sex and attraction of the opposite sex. Photodynamic technology in medical beauty equipment is applied to photodynamics, used in conjunction with photosensitizers to irradiate skin and mucous membrane lesions through light waves of different wavelengths, used for the treatment of acne, warts, vascular lesions and the assistance of certain tissue lesions diagnosis.