Laser Technician IBEC Board Exam 2025 - Free International Board of Electrologist Certification Practice Questions.

The phase of the hair growth cycle characterized by hair actively growing is known as the anagen phase. During this phase, the hair follicles are fully engaged in producing new hair. It is the longest phase of the hair growth cycle, lasting anywhere from several months to several years, depending on various factors such as the location of the hair on the body and individual genetics.

In the anagen phase, cells in the hair follicle divide rapidly, pushing older cells up through the follicle, which forms the hair shaft. This phase is critical for hair density and health, as it determines how much hair can grow and persist before entering the next phases.

The other phases, such as telogen (the resting phase), catagen (the transitional phase), and exogen (the shedding phase), do not involve active hair growth. Telogen involves hair shedding and resting, catagen is a short transitional phase where growth stops, and exogen is when the mature hair is released from the follicle. Understanding these phases is essential for professionals in hair removal and laser treatments, as they affect when and how hair can be effectively treated.