Picosecond Laser Removal of Tattoos

What adverse reactions will laser hair removal produce

According to the theory of selective photothermal action, as long as the appropriate wavelength, pulse width and energy density are selected, the laser can accurately destroy the hair follicle without causing damage to the adjacent tissue. In order to achieve curative effect, it is obvious that the melanin of the hair ball and the bulge above it (the outer root sheath of the hair follicle between the opening of the sebaceous gland and the attachment of the hair follicle of the erector pili, where the hair follicle stem cells are located) must be treated with light. So what adverse reactions will laser hair removal produce?

What adverse reactions will laser hair removal produce?

1、 In operation

  1. Pain: every time the laser irradiates, there may be slight and instantaneous skin pain, which will disappear after stopping the irradiation without anesthesia;
  2. Erythema: after laser irradiation, there is temporary skin redness in the irradiation area;
  3. Wind mass: after laser irradiation, there is “” a small swelling “” in the pores, just like a small pimple after mosquito bite, which can subside naturally after 1-2 hours;

2、 After operation

  1. Erythema: there may be light erythema in the irradiation area, which generally subsides naturally after a few days;
  2. Peeling: some people have brown thin scabs on their skin after treatment, which fall off naturally in about a week;
  3. Pigmentation: a few people may have light brown spots after treatment, which is a response of the skin to laser treatment. Because only a few people occur, it is related to the individual’s special constitution. If pigmentation occurs, most of them can still recover after a few months. The 800 nm, 100 ms semiconductor laser has a longer pulse width than the general 30 ms laser, and is equipped with a cooling head, so the possibility of pigmentation is less.
  4. Scar: theoretically, this selective laser will not cause irreversible damage to the normal tissue around the hair follicle. However, if you have a special constitution, or do not pay attention to local cleaning and bacterial infection after operation, small scars may appear.