1, laser according to its medium can be divided into:
① solid laser; ② gas laser; ③ liquid laser; ④ semiconductor laser.
The introduction of cosmetic lasers has provided the field of plastic surgery and cosmetology with new technical means of treatment, and solved many problems that could not be solved by previous treatment methods. However, most of the cosmetic laser equipment due to its sophisticated technology, expensive, only in recent years into China's medical industry.
Lasers achieve their function through interaction with tissues. According to the tissue into what kind of energy, laser is divided into;
①Photothermal effect: the tissue will be converted into thermal energy laser light energy, there are different absorption coefficients in different tissues, so a specific wavelength of laser light can be absorbed by some specific tissues, which is the fundamental reason for the high choice of laser light, such as laser fine-cutting, haemostasis and facial wrinkles, etc.;
②Photo-explosive effect: pulsed laser light Can produce high-impact shock wave, can burst and crush the tissue, such as laser damage to pigment particles, etc.
③ Photochemical effect: the tissue will be converted into chemical energy, resulting in chemical decomposition. For example, ArF excimer laser corrects corneal deformation;
④Photodynamic effect: mainly used in the treatment of tumors.
2, laser cosmetology according to the use can be divided into:
(1) laser removal of various facial skin pigments, such as melanin (moles and tattoos), red pigment (hemangiomas);
(2) laser removal of moles, warts, pimples, redundant organisms, benign tumors and other skin blemishes;
(3) laser permanently remove unwanted body hair;
(4) laser Removal of facial wrinkles;
(5) Laser knife instead of scalpel to carry out fine, minimally invasive, bloodless plastic surgery.