With the improvement of living standards, people’s requirements for skin beauty are getting higher and higher, and the emergence of laser beauty has met people’s needs. Traditional skin aesthetic lasers are divided into two categories: exfoliative and non-exfoliative. Non-exfoliative lasers are safe, less traumatic and quicker to recover, but slightly less effective. The non-exfoliating laser vaporizes the epidermis and regenerates the epidermis by the body’s repair ability, while stimulating the dermal collagen growth and rearrangement, which has excellent skin rejuvenation effect and is regarded as the gold standard of laser beauty and skin rejuvenation in Europe. Fractional lasers, which combine the advantages of both ablative and non-ablative lasers, have been developed. Fractional lasers are close to the efficacy of exfoliative lasers and have similar side effects to non-exfoliative lasers, making them a popular choice among aestheticians. Fractional laser technology is the newest and hottest technology in the United States in recent years, and is also the most talked about technology in the global skin industry, which is a minimally invasive treatment between invasive and non-invasive. The theory of fractional laser treatment, called Fractional Photothermolysis, was first published in 2004 by Dr. Rox Anderson, an expert in laser medicine at Harvard University, and was immediately recognized by experts around the world and rapidly applied in clinical treatment. Fractional laser is also known as “beam laser” or “pixel laser”, which is a figurative term. In essence, each pulsed laser is divided into nearly 100 micro-laser pulses, each micro-laser spot is only 75-100um, when these tiny laser beams act on the skin surface, those densely distributed dots look like imaging “pixels”, hence the name pixel laser. The fractional laser punches microscopic holes evenly on the skin, which in turn causes a series of biochemical reactions on the skin, resulting in skin tightening, skin rejuvenation and pigmentation removal. Since the fractional laser treatment will only cover part of the skin tissue, the new holes will not overlap each other and the normal skin between the holes is preserved, which acts as a bridge and facilitates rapid skin recovery. Patients can return to normal life after four to five days. The treatment itself is safe, and can treat any part of the body. There are two modes of fractional laser emission, one is the installation of a graphic generator on the laser handpiece, the laser beam is focused into a very fine beam after passing through the graphic generator and is emitted onto the skin by scanning, there is a time difference between the emission of different laser beams, so that the skin in the irradiated area has a certain cooling time, reducing thermal damage, and at the same time, under the control of the microcomputer, the size and shape of the scanned spot can be adjusted, increasing the clinical application of can be adjusted, increasing the flexibility of clinical applications. The other is that a sieve-shaped image generator (dozens of dotted microlenses) is installed on the laser handpiece, and the laser beam is rigidly divided into multiple tiny beams during laser emission, so that the energy of the laser beam is only dispersed from the distance, but the heat still acts on the skin at the same time. Another disadvantage is that one image generator determines the size of the spot and the density of the spot, making it impossible to adjust the spot and density flexibly. Our newly introduced Profile super platform is manufactured by Sciton, USA, equipped with 2940nm Er:YAG fractional laser module and micro-exfoliation module, the fractional generation mode is the scanning mode of the graphic generator, the shallowest epidermis can be peeled off by 4um in micro-exfoliation mode, and the depth is adjustable, which greatly increases the flexibility of clinical use. Fractional laser can be effectively used for: 1, treatment of acne and acne scars, surgical and trauma scars, etc.; 2, removal of fine lines and dry lines around the eyes such as eyelids and crow’s feet; 3, effective improvement of facial and forehead wrinkles, joint folds and stretch marks; 4, treatment of pigmented lesions such as freckles and coffee spots; 5, skin tightening and lifting; 6, skin photoaging. Contraindications to fractional laser: 1, scarring; 2, severe diabetes, hypertension; 3, psychiatric patients, or those who have high expectations of treatment; 4, active vitiligo and psoriasis, systemic lupus erythematosus; 5, pregnancy or lactation; 6, photosensitivity; 7, chemical peels, grinding and other skin resurfacing procedures; 8, recent use of retinoid drugs; 9, unwilling to Patients who are unwilling to undergo post-operative sun protection and accept the risks of abrasion, etc. Fractional Laser Q & A Q: Why doesn’t the fractional laser bleed during the treatment? A: The fractional laser has a hair-thin spot with a diameter of only 50-80um producing a micro-hole with a diameter of 50-120um on the skin. There is a small area of thermal coagulation around the micro-hole, and the temperature of this area is greater than 65 degrees Celsius, and this temperature can make the blood coagulate so there is no bleeding. Q: In which areas of the face is fractional laser more effective A: Fractional laser is more suitable for mild to moderate wrinkles, especially fine wrinkles that cannot be eliminated by surgical procedures and soft tissue fillers. Q: Is the effect of fractional laser noticeable at that time or at a later stage? A: The lifting effect will be obvious at that time, mainly caused by the collagen contraction due to the thermal effect, but there will be collagen renewal in the later stage. So you will find that the skin will become better and better in the later stage, the texture will become more and more delicate, and the wrinkles will become lighter and lighter. Q: What will be the changes after a course of fractional laser for normal people? A: The facial contour will be obviously sculpted, the face will be lifted and become tight, the skin will become smooth, delicate, shiny and elastic, fine wrinkles will disappear, and deep wrinkles will become significantly shorter and lighter. Q: Will the skin be sensitive and thin after the procedure? A: 1 Fractional laser works on the skin by scanning in a disorderly way, the diameter of the light spot is only 50-80um and the damage to the epidermis is very small, and the treatment will make the collagen fibers new and thicken the dermis, so it will only improve the skin and not thin it.