In the clinic, laser hair removal surgery is often used to remove large and small leg hair, through laser irradiation to make the melanin in the hair follicle area to absorb the specific wavelength energy, burn the hair follicle, thus causing the hair to fall off. However, laser irradiation will only cause damage to body hair during the growth phase, and will not have a destructive effect on body hair during the degenerative and resting phases, so the laser hair removal surgery needs to be completed several times. Laser hair removal surgery for large and small legs, despite the better results, but there are still some surgical risks: 1, causing burns and inflammation: laser hair removal will burn the hair papillae, so the power is too high and may cause burns to the skin tissues; 2, hair removal will leave hyperpigmentation, some of the formation of pigmented spots: laser irradiation, it is more susceptible to the influence of ultraviolet rays, do not do a good job in the sun may be the formation of brown spots; 3, the growth of body hair: laser hair removal Laser hair removal can activate the pores that normally do not see the growth of body hair, but instead cause an increase in body hair; 4, the preoperative examination is not meticulous, resulting in hormonal drug therapy, chemotherapy, radiotherapy, or skin infections or scars of the population to receive this treatment, which can exacerbate the original disease, or even lead to more serious complications. It is recommended that candidates who undergo laser hair removal for small and large legs try not to take a bath on the same day, as the skin will become sensitive after hair removal and may feel painful when taking a bath. In addition, after receiving laser treatment, you need to temporarily avoid ultraviolet radiation, and you need to pay attention to sun protection when you go out, as ultraviolet radiation after treatment is prone to cause brown spots, inflammation and so on.