Hair follicles grow in a cycle, though not in sync with each other, so several treatments are necessary to catch follicles at their vulnerable place in the growth cycle.
Because many hair removal lasers can be tuned, treating individual rogue hairs – such as those that grow darker and thicker with time – is possible without affecting surrounding follicles that continue to grow normally.
Laser hair removal targets melanin in hair follicles, using single, specific wavelengths that are, in many cases, tuned to match the skin pigmentation of each patient.
How it Works