Tattoo artist often said tattoo is a “beautiful and eternal mistake”, tattoo is the pigment into the dermis of the skin to obtain a certain pattern or permanent pigment effect. Tattoos are common in the eyebrows, text eyeliner, text lip line and some of the upper extremities of the text and patterns. Tattoo easy to get rid of difficult, early tattoo removal methods include: chemical peeling, freezing, skin abrasion, etc.. These methods are often ineffective, post-operative scarring, and even more than tattoos affect the beauty. Subsequently, some people have tried to use close to the skin color shades to cover the pigment, the effect is not satisfactory, covered with a very dirty look, the lack of skin texture. Then for a long time the application of multifunctional ionization therapy instrument to remove pigment, the effect is improved compared to the above methods, basically can lighten the color of the text, but the disadvantage is that there can be left light brown pigment, the text of the deeper places can not be burned too deep, otherwise it will also leave scars. Surgeons often use the method of cutting off the pigmented skin, but even the best and most careful suturing can leave thread-like scars. Shanghai Long March Hospital Plastic Surgery Zhang Wenjun Until after the medical laser, tattoos have become a “short-lived beauty and eternal mistakes”. The laser can make the lesion tissue instantaneous destruction and not to the surrounding tissue to conduct heat, that is, the damage to the surrounding normal skin tissue is minimal, up to mutual “fire in the chestnut” like a magical effect, thus solving the previous beauty treatment instrument “regardless of my enemy” all burned, inevitably due to injury into the dermis leaving a scar of fatal shortcomings. At present, the general tattoo is divided into professional tattoo, amateur tattoo and traumatic tattoo. Professional tattoos with dye color composition red for the mercury agent, yellow for the material containing cadmium, green for the material containing chromium, blue for the material containing cobalt. The number of treatments is relatively high. However, some small beauty salons made very informal, with the raw materials are not uniform, the color does not know what is, generally black more; in addition, the depth can not be well controlled. According to the requirements of the epidermis and the dermis between the shallow layer, a long time can naturally take off some, beauty salons often do deeper, to the deep dermis and even under the skin, plus the spread of raw materials, the scope will be greater. Such tattoos are often more difficult to clean Amateur tattoos are generally black, gray or blue-black, commonly used pigments for carbon or Indian ink, domestic ink is generally used in different depths of the dermis, the distribution of laser treatment of such tattoos is relatively easy. Traumatic tattoo is a special tattoo, including glass, metal, clay or carbon containing substances, can be located in the deep tissue of the skin, and can be wrapped to form granulomas, treatment according to the different foreign bodies, the number of times also varies, the foreign body containing iron deposition is extremely difficult to remove with laser, often requiring surgery. Traumatic tattoo pigment particles of different sizes, and into the skin of the arbitrary large, often deep into the deep dermis and fat layer. Q-switched ruby laser treatment of blue and black professional tattoos, non-professional tattoos and traumatic tattoos have a good treatment effect. The figure below shows the Q-switched ruby laser from KMD, which is commonly used in our department. Treatment area with 5% / compound lidocaine ointment local anesthesia sealed 40-50MIN, remove the anesthetic, the skin is routinely disinfected and dried, the laser beam vertical irradiation tattoo area. Laser through selective photothermal action and color complementary principle to remove pigment, skin tattoo pigment particles in the Q-switched laser irradiation, absorbing the instantaneous high energy of the laser, so that the pigment particles vaporized and broken, while the cell framework can be retained intact. At the same time, because the laser pulse time is shorter than the thermal relaxation time of the skin tissue, the instantaneous single pulse laser energy release process is completed in about one millionth of a second, so that the newly generated heat is not transmitted to the surrounding tissues and epidermis, the lesion tissue is eliminated by the thermal effect at the same time, the surrounding healthy skin tissue will not be damaged. During the subsequent inflammatory response, some of the particle debris is filtered and eliminated directly into the capillary lymphatic vessels, and some is phagocytosed by macrophages and eliminated by acidic hydrolytic enzymatic degradation. The cells that have been cleared of pigment granules can be quickly repaired on the basis of a more intact cellular framework. The laser treatment parameters are set according to the patient’s age, lesion area, color shade, and the reaction that occurs after laser irradiation of the skin, resulting in an immediate yellow-white change in the skin followed by mild edema. Post-operative care such as sun protection should be taken to minimize the occurrence of adverse reactions. Laser treatment after care should pay attention to: keep the wound surface dry, clean, generally are not bandaged, such as the wound surface is large or not easy to expose parts can be appropriate bandage, the scope of a larger oral antibiotics can be given at the same time, avoid sun exposure and strenuous exercise, prohibit cosmetics, in order to avoid traumatic pigmentation. Each treatment requires an interval of 2-3 months, with a follow-up of 6 months. In general, the deeper the tattoo color, the deeper the tattoo level, the more metal ions in the pigment, the more treatment required, clinically common to the thick black tattoo treatment after two or three times, most of the thick black can be removed, but the legacy of red pigment. This is mainly pigment containing iron and chromium ions difficult to remove the reason. The disadvantage of laser treatment of tattoos is the higher cost of treatment, the treatment period is long. Somewhat less painful for patients, less damage, female patients in particular prefer to use laser treatment.