Definition of laser hair removal Laser hair removal is based on the principle of selective photothermodynamics by reasonably adjusting the laser wavelength energy pulse width laser can cross the skin surface to reach the root of the hair follicle light energy is absorbed and converted into heat energy to destroy the hair follicle tissue so that the hair loses its ability to regenerate while not damaging the surrounding tissue pain is slight laser hair removal is currently the safest fast and long-lasting hair removal technology. The principle of laser hair removal Laser hair removal uses the principle of “selective photothermal effect” of laser. A laser light of a specific wavelength is applied through the epidermis and directly irradiates the hair follicles. The melanin in the hair follicle and hair shaft selectively absorbs the light energy and the resulting thermal effect causes necrosis of the hair follicle and the hair stops growing. The effect of laser hair removal Since the process of heat absorption and necrosis of hair follicles is irreversible, laser hair removal can achieve the effect of permanent hair removal. Laser hair removal is suitable for all parts of the body (upper and lower limbs, legs, chest, abdomen, hairline, facial beard, outside the bikini line) with unwanted black hair. Those whose hair removal by electric needle, medicine, electric tweezer or other instruments is ineffective or failed. Laser Hair Removal Pain Laser hair removal is one of the less painful hair removal methods among all hair removal methods. The results of many clinical trials show that most patients only feel the sensation of being “bounced by a rubber band”. In addition, each person feels pain differently due to their physical condition. Before laser hair removal, there will be an “irradiation test” phase to determine the patient’s pain. The advantages of laser hair removal 1, laser hair removal is a relatively low pain hair removal method among all hair removal methods. The clinical test results show that most patients only feel the feeling of “being bounced by a rubber band”; 2, the advantage of laser hair removal is that the hair removal is very thorough, using the laser can penetrate to the deep dermis and subcutaneous fat tissue, acting on the depth of hair follicles in different parts, to effectively remove the depth of hair in any part of the human body; 3. The advantage of laser hair removal is that it will not harm the epidermis; 4. The advantage of laser hair removal is that the pigmentation after hair removal is relatively very close to our skin. The fourth advantage is that it will not damage our skin. Laser hair removal misconceptions 1, whether laser hair removal is safe Laser hair removal is a very safe hair removal method: targeted, no side effects on the human body, almost no effect on the skin; 2, do laser hair removal precautions Do laser hair removal should pay attention to the hair removal parts in the week before and two weeks after treatment sun protection, hair removal parts should not be done two weeks before treatment plucking, wax hair removal and electrolysis hair removal; 3, laser hair removal The principle of laser hair removal is the principle of selective thermodynamics: that is, the selected wavelength only acts on melanin and not on normal skin tissue, and the selected pulse width only acts on melanin in the hair follicle and not on melanin in the basal layer of the skin; 4, laser hair removal requires a number of times Laser hair removal generally requires three to six times, mainly because of two factors: first, most of the hair follicles are a group of three bundled together, opening in the same First, most of the hair follicles are bundled together in a group of three, opening in the same pore, a hair in the pore is a set of three hair follicles in the hair follicles below it, so a treatment can only destroy a group of hair follicles; second, hair growth to go through the anagen phase, regression phase, rest period, in the anagen phase of hair to do laser hair removal for 75% effective, regression phase for 25%, rest period almost invalid; 5, laser hair removal will not affect sweating after laser hair removal will not The laser hair removal will not affect sweating, because sweating mainly depends on small sweat glands, and the small sweat gland opening is not in the hair follicle. Laser hair removal precautions 1.After treatment, avoid sun exposure for 3 months to 6 months, and use the sunscreen lotion instructed by the doctor on the affected area to reduce sun exposure; 2.After treatment, there may be slight redness and swelling, skin sensitivity and hot or itchy feeling, if you feel pain, use ice to reduce pain; 3.Avoid hot water and hard scrubbing on the treatment area.