Laser aesthetic technology is a widely used medical aesthetic technology in recent years. The use of laser cosmetology can be a good treatment for some skin diseases, but also can play a certain cosmetic effect on normal human skin. Laser as a cosmetic treatment has the irreplaceable advantages of easy operation, fast and less time, can stop bleeding at the same time, and for moles, warts and tumors without surgical removal. However, while removing diseased tissue, laser can also damage normal tissue, most commonly leaving superficial scars, hypopigmentation (white spots) or hyperpigmentation spots, especially for those with scars. So, laser beauty is not a panacea, many people do not know much about the pros and cons of laser beauty, so this article will make a more detailed introduction to the pros and cons of laser beauty, to help you thoroughly understand the pros and cons of laser beauty, and make a good choice when receiving treatment. The advantages of laser beauty Laser can instantly send out a high energy density of the giant pulse, penetrate the melanin epidermis into it, so that the pigment particles in the absorption of laser energy will be destroyed, crushed, these crushed pigment and then by the body phagocytes phagocytosis absorption and removal or scab off, its outstanding feature is that the treatment can be external local anesthesia, in a few minutes to dozens of minutes to complete a treatment, the treatment is convenient, the efficacy is reliable, no side effects, no side effects, no scab off. It has no side effects, no scars, and no hospitalization. It mainly removes melanin, blue pigment, brown pigment, tattoos, nevus of Ota, bad tattoos, eye and lip lines, birthmarks, freckles, age spots, coffee spots, traumatic hyperpigmentation and other kinds of melanin. Advantages: Since a certain wavelength of laser is only absorbed by the pigment of the corresponding color. Only the diseased cells absorb the specific laser light, while the normal skin tissue is not damaged, so no scars are left. Laser cosmetic surgery is not open surgery, it is carried out on the whole body skin epidermis or superficial dermis, selective effect on pigment cells, convenient treatment, reliable efficacy without side effects, no scars, no hospitalization. The application of laser technology in skin beauty: 1, various skin spots and nevi and skin pigment abnormalities: nevus of placenta, bright red nevus, coffee spot, freckles, stretch marks, vitiligo, etc.; 2, skin vascular diseases: hemangioma, spider nevus, etc.; 3, various skin tattoos; 4, hair growth abnormalities: hirsutism; 5, skin neoplasia; 6, aging skin problems; 7, trauma, post-traumatic skin scars Most of the above diseases have more advantages of laser treatment than conventional methods, and laser has become the deservedly preferred method. The disadvantages of laser cosmetic laser in the removal of diseased tissue at the same time, there is damage to normal tissue, the most common is to leave superficial scars, hypopigmentation (white spots) or hyperpigmentation spots, especially scar body people should be more cautious. In addition, laser is powerless against pigmented skin diseases such as chloasma caused by endocrine disorders. Laser can only treat the symptoms but not the root cause, and the spots will rebound soon after being removed because the internal causes of the spots are not removed. After introducing so many advantages and disadvantages of laser beauty treatment, you should know more about it. For some diseases, such as nevus of Ota, common pigmentation scars, tattoos and other skin diseases, there is a very good treatment effect, and the side effects are small. However, the treatment for melasma, freckles, etc. is not very good. Although the spots on the face can be removed after the treatment, because these diseases are caused by the body genes or internal factors, so doing laser cosmetic treatment at this time is a cure for the symptoms but not the root cause. When using laser cosmetology, you must first make a good understanding of the pros and cons of laser cosmetology and analyze its effect on various diseases before making a decision.