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There may be slight burning sensation after operation, which can disappear within 2-3 hours, and some parts have local slight redness and swelling, which can be recovered within 2-3 days. There is no need to bandage the treatment area and apply antibiotic ointment locally. Pay attention to keep clean after operation and avoid sunlight.
There are few side effects after laser hair removal, the most common are blister formation, pigmentation and hypopigmentation, and scar is rare.
Preventive measures: ① the treatment dose should be appropriate. Generally, the test should be started from low energy and gradually increased, so that the patient has a slight burning feeling after treatment, and there are edematous small wind masses around some hair follicles a few minutes after the treatment. Avoid rapid skin whitening, blistering, epidermal peeling, etc. ② It is very important to use cooling measures continuously during treatment and keep the contact surface between laser hand and skin clean. ③ Prevent wound infection and take antibiotics orally if necessary.
The occurrence of adverse reactions is mainly related to the amount of melanin in the skin, the treatment site, the type of instrument used for treatment, energy density, whether there are cooling measures, etc. In addition, the occurrence of adverse reactions is also significantly related to seasonal changes and sunlight exposure. For patients with dark skin color, it is advisable to treat them with a laser with a long pulse width (such as the pulse width setting of more than 100 ms in Lightsheer), which can reduce the side effects.