The laser emits a beam of light, which the pigment (color) inside your hair absorbs. After some time, This tends to demolish the hair follicle, Therefore the hair can't develop again. Even though it requires about 6 treatment plans from the dermatologist to destroy a follicle, the hair will mature https://www.glassdoor.com/Overview/Working-at-SOS-WAX-and-Skincare-EI_IE1725043.11,31.htm