Written Laser Hair Removal Practice Exam 2026 - Free Laser Hair Removal Practice Questions and Study Guide

Active hair follicles are characterized by being in the anagen phase of the hair growth cycle. During this phase, the follicles are actively producing hair, and the cells in the follicle are dividing rapidly, which leads to hair growth. This is the only phase where hair can be effectively targeted by laser hair removal, as the hair is firmly anchored in the follicle.

The other choices do not correctly represent the fundamental differences between active and inactive hair follicles. While size may vary, it is not a definitive characteristic of activity. Inactive follicles are not too sensitive; they are generally in a resting or shedding phase (telogen or catagen) and do not engage in hair production. The notion that inactive follicles never regrow is also misleading; inactive follicles can reactivate under certain conditions, leading to hair regrowth later. Therefore, recognizing that the defining factor of active follicles is their presence in the anagen phase is crucial for understanding the effectiveness of laser hair removal.