Many of my friends ask me if laser cosmetic surgery is safe. How exactly does the treatment work? Now I will give you a brief introduction, hope it can be helpful for you. Laser cosmetic surgery Overview What is laser cosmetic surgery? In real life, people are commonly exposed to the word “laser” beauty, and simply understand that laser is a very strong light, this understanding is very one-sided. What kind of light is this light? Laser is short for amplified light by radiation. This light is different from the ordinary light and sunlight we usually see, its wavelength is a single, narrow range, in a single color. Laser light rarely diffuses during propagation, but propagates in parallel, almost concentrating at the focal point, and has a very high energy, so these characteristics of laser light make it fully applicable to daily life. Especially for some medical and cosmetic aspects, but of course, in other fields as well. The history of laser cosmetology In 1917, the great scientist Albert Einstein predicted the existence of excited radiation and the possibility of light amplification, and then established the basic theory of laser. 1960, Meyman made the world’s first laser – ruby laser, from then on, a completely new light source was born. 1963, Goldman L began to use the ruby laser as a light source. Goldman L began to apply the ruby laser to benign skin damage and tattoo treatment with success, pioneering the application of laser medicine. In the 1980s, the erbium laser, excimer laser, and the continuous perfection of the CO2 guy laser and pulsed dye laser, the new laser technology has been more mature for research, diagnosis and treatment of diseases and cosmetic skin treatment, and has formed a large professional team, which is one of the important signs of the formation of the discipline of laser medicine. 1990s onwards, with the progress of science and laser In the mid and late 1990s, the United States, Israel, Britain, Germany, advanced sets of laser cosmetology instrument rapidly into the domestic, and tends to popularize, some domestic laser cosmetology instrument early domestic has also been more and more applications. The development so far, laser cosmetology has been in the whole laser treatment in the first place, its prospects continue to look good. Modern laser beauty has become the most attractive and promising part of contemporary medical beauty. Laser beauty treatment principle: laser irradiation on the skin tissue will produce photothermal effect, photochemical effect, pressure effect, electromagnetic field effect and biological stimulation effect. The most important one is the photothermal effect. When the laser output specific wavelength irradiation skin lesions, the light energy into heat energy, is selectively absorbed. The extremely high thermal energy causes the skin lesion tissue to be rapidly pyrolyzed, vaporized, or broken into tiny fragments, which are engulfed by phagocytes in the body and discharged out of the body, thus achieving the purpose of removing the skin lesion. Because the normal skin tissue around the lesion absorbs little heat energy, it will not cause any damage. The photochemical effect is to provide energy for tissue metabolism, accelerating and directly triggering biochemical reactions. The piezoelectric effect generates counter-stamping, vapor pressure, ultrasonic pressure and thermal expansion in the tissue to destroy the lesioned tissue. Electromagnetic effect generates electromagnetic waves to denature and destroy proteins in diseased tissues. Biostimulation effect can promote tissue repair, cell regeneration, improve the body’s immunity, while sterilization and antibacterial, reduce tissue inflammation response, etc. Lasers are used more and more widely in the cosmetic industry. Lasers are used to remove or destroy target tissues by generating high energy, precisely focused monochromatic light with certain penetrating power, which acts on human tissues and generates high heat in the local area. Tattoo removal, eyeliner cleaning, eyebrow cleaning, treatment of scarring, etc.; and in recent years, some new lasers, high-energy ultra-pulse CO2 laser, erbium laser for wrinkle removal, skin resurfacing, snoring treatment, teeth whitening, etc., have achieved good results, opening up an increasingly broad field for laser surgery. And in recent years, with the emergence of different wavelength lasers, high-energy ultra-pulsed CO2 lasers, variable pulse lasers and erbium lasers, etc., laser cosmetology has set off a climax in the medical cosmetic industry. The use of laser in the cosmetic world is becoming more and more extensive. Classification of laser cosmetic 1, laser can be divided according to its medium: ① solid laser; ② gas laser; ③ liquid laser; ④ semiconductor laser. The introduction of cosmetic lasers has provided a new technical treatment means for the field of cosmetic surgery, and also solved many problems that could not be solved by previous treatment methods. However, most cosmetic laser equipment has only entered our medical industry in recent years due to its technical precision and high price. Lasers achieve their function by interacting with tissues. According to what kind of energy the tissue converts the laser into, the laser is divided into; ① photothermal effect: the tissue converts the light energy of the laser into heat energy, different tissues have different absorption coefficients, so specific wavelengths of laser can be absorbed by some specific tissues, which is the fundamental reason for the high choice of laser, such as laser fine cutting, hemostasis and facial wrinkle removal; ② light burst effect: pulsed laser can produce a high impact shock wave that can burst and shatter tissue, such as laser destruction of pigment particles, etc.; ③ photochemical effect; the tissue converts the laser into chemical energy, resulting in chemical decomposition. Such as ArF excimer laser correction of corneal deformation; ④ photodynamic effect: mainly used for the treatment of tumors. 2, laser beauty can be divided according to the use of: (1) laser removal of facial skin pigments, such as melanin (moles and tattoos), red pigment (hemangioma); (2) laser removal of moles, warts, papules, redundant, benign tumors and other skin defects; (3) laser permanent removal of unwanted body hair; (4) laser removal of facial wrinkles; (5) laser knife instead of scalpel to carry out fine, minimally invasive, bloodless plastic surgery.