Massachusetts Board of Cosmetology Practice Exam 2026 - Free Cosmetology Practice Questions and Study Guide

The hair growth cycle has three distinct phases: anagen (growth phase), catagen (transitional phase), and telogen (resting phase). Each phase influences the hair's characteristics and how it responds to various treatments. For example, during the anagen phase, hair is actively growing, making it the most effective time for treatments aimed at enhancing growth or dealing with hair loss. Conversely, during the telogen phase, the hair is not actively growing, which may limit the effectiveness of treatments that rely on stimulating growth.

Understanding these phases allows stylists and cosmetologists to tailor their treatments according to the specific needs and conditions of the hair at the time of the service. This tailored approach increases the likelihood of positive outcomes from treatments, whether they are chemical processes, hair restoration therapies, or other methods aimed at improving hair health and appearance.