In recent years, laser cosmetic surgery is a new non-surgical cosmetic method that has emerged. Laser has a variety of characteristics such as high energy, specific direction and penetrating, which can produce high heat locally in human tissues to remove or destroy the target tissues. With the development and popularity of laser cosmetology, beauty lovers have discovered the secret of solving skin problems with half the effort. A. Why laser can be used for cosmetic treatment? The use of laser for medical aesthetics mainly depends on its energy and penetration. Specific surface lesions can absorb specific wavelengths of laser light and destroy the lesions through energy. Different depths of lesions require different wavelengths of laser light to reach them. The shorter the wavelength of the laser, the stronger the penetration, the deeper the skin; and the deeper the color of the lesion, the longer the wavelength of the laser that can be absorbed. Second, what skin problems can be solved by laser? 1.Spot removal – freckles, age spots Spot removal is actually the biggest field of laser treatment, which can play a good effect on most of the spots on the surface of the skin. The principle is mainly to use the energy of laser to destroy the pigment and make it decompose and absorb. 2.Treatment of congestion – capillary dilation, red face Capillary dilation is mostly seen in fair-skinned patients, and the laser applies its photothermal effect to close the blood vessels and achieve the treatment effect. 3, hair removal Hair removal is also an important part of laser treatment, especially in the armpits, limbs, perioral applications are most widely used. 4.Treatment of acne Laser can only treat mild to moderate acne, and laser treatment should not be chosen when severe or infection exists. Laser treatment can be done in combination with dermatological drugs. 5, skin resurfacing – skin tightening, wrinkle removal The strong pulsed light of the laser acts on the skin tissue, producing photothermal and photochemical effects, which can make the deep collagen fibers and elastic fibers rearrange, regenerate, and restore elasticity; make facial skin wrinkles disappear or reduce, pores reduce, and play a role in skin rejuvenation. Third, how to scientific care after treatment? As the laser treatment will leave fine wounds and scabs on the skin, there are many points worth noting in skin care: 1, after treatment, because the skin is sensitive to heat sources, avoid using hot water to wash the treatment area, you should use warm water or cold water to wash, wash as gently as possible, do not rub hard. 2, in the treatment of the moment of strong light effect, the free water on the skin lost a lot, so after treatment most patients will feel dry skin dehydration, so after the treatment to give timely replenishment of water. 3.The treatment area should be coated with anti-inflammatory ointment (such as erythromycin ointment, gentamycin ointment or Bactrim, etc.) for 2-3 days, twice a day, to prevent infection, and note that the number of applications should not be excessive, otherwise it will affect the formation of scabs. 4. Do not touch water in the treatment area during the recovery period, do not carry out skin care, do not wear makeup and do not rub. 5.During the recovery period, you should not engage in strenuous exercise to avoid sweating too much and causing skin infection or delaying the repair process. 6.After treatment, ice or cold spray should be given according to the severity of the skin reaction. 7.Forbid to eat photosensitive food and medicine during the treatment period. 8.The scab during the recovery period will generally fall off on its own in about 7-10 days, and cannot be peeled off artificially by hand to avoid pigmentation and scars. 9. Due to individual differences, temporary pigmentation or hypopigmentation may occur locally after treatment, these transient pigment changes will gradually return to normal, recovery time of about 1-3 months, individual up to 9 months or longer. If necessary, take vitamin C and vitamin E orally or use hydroquinone cream and levovitamin C topically. 10. Pay attention to sun protection during the recovery period, apply sunscreen and use sunshades when going out. Fourth, the following categories of people should not do laser treatment 1, pregnant women 2, patients with light-sensitive diseases (such as psoriasis, vitiligo, eczema, etc.) 3, people who are using light-sensitive drugs (such as tetracycline, quinolone, sulfonamide, antidepressants, diuretics, hypoglycemic drugs, anti-inflammatory painkillers, female hormone preparations, etc.) 4, the last 3-4 weeks have been exposed to the sun 5, with active herpes simplex 6, diabetic patients 7, keloid 8, dry sensitive skin 9, and, inflamed, pus-filled skin need to recover before receiving treatment, one month before treatment to avoid strong sun exposure or outdoor SPA, a week before treatment can not do dermabrasion, fruit acid peeling beauty project. In short, if you have skin lesions or take special medication, you need to consult your doctor before starting the treatment. There is no doubt that laser cosmetology, a rising beauty method, will be more popular in the future, non-surgical to ensure the safety and comfort of this beauty method, can effectively solve some common skin diseases, to relieve the beauty lovers of skin dissatisfaction. Laser aesthetic is developing and will become more popular in your life to effectively solve everyone’s skin problems.