Does hair removal have an effect once?
OPT hair removal usually takes three to six times to achieve the desired result.
There are two reasons for this:
1）The hair follicles are mostly bundled together in three groups and open in the same pore. One of the hairs is a hair that grows from one of the three hair follicles below it, so one treatment can only destroy one a hair follicle in the group;
2）The hair cycle is divided into the growth period, the regression period, the cessation period, the laser hair removal rate in the growth period is 75%, the regression period is 25%, and the cessation period is almost ineffective.