Why multiple treatment sessions are usually needed?
All lasers work by destroying hair follicles that are in their active growth cycle at the time of treatment. Hair follicles in their “dormant” phase have no hair affected by the laser. Because hair follicles cycle runs through “active” and “dormant” Phases of specific period about 6 to 10 weeks depending on body site, the laser treatment needs multiple sittings at specific intervals to destroy active follicles.
