Colorado Barbering Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

The three phases of hair growth—anagen, catagen, and telogen—form a complete cycle that every hair follicle goes through.

During the anagen phase, which is the active growth phase, the hair bulb is deeply rooted in the dermis, and cells in the hair matrix are rapidly dividing, resulting in the lengthening of the hair. This phase can last several years, depending on genetic factors and individual health.

The catagen phase is a transitional stage that lasts for a few weeks. During this time, the hair follicle shrinks, and the hair stops growing. The hair begins to detach from the blood supply, which leads to the eventual end of the active growth.

Finally, the telogen phase is the resting phase where the hair is fully formed but is not actively growing. This phase can last several months, after which the hair may shed and the cycle begins anew. Understanding these phases is crucial for professionals in the barbering and cosmetology field, as it informs practices related to hair care, treatments, and expectations for clients regarding hair growth and shedding.