IPL sends light wavelengths towards the skin absorbed by the hair root. The light stimulates the hair follicles to enter the dormant phase. As a consequence, the hair is split naturally, regrowth is prevented and leaves your skin silky smooth.
The hair growth cycle consists of different phases. IPL technology is effective on hair in the growth phase. Not all hairs are in the same phase at the same time. Why we recommend a 4-12 week treatment schedule to ensure that all desired hairs are effectively treated during their growth phase.
Note that treatment with IPL is not effective if you have white, red and gray hairs that do not absorb enough light.