What are the three phases of the hair growth cycle?

The three phases of the hair growth cycle are commonly identified as anagen, catagen, and telogen. Understanding these phases is crucial in the field of hair care and barbering as they describe the lifecycle of hair.

The anagen phase is the active growth phase where the hair follicles are primarily engaged in producing new hair. This phase can last for several years, depending on individual factors, and is vital for determining the length of the hair.

The catagen phase is a transitional phase that lasts a few weeks. During this time, hair growth slows down, and the hair follicle begins to shrink. This transition is essential as the follicle prepares to enter the next stage.

The telogen phase, also known as the resting phase, is when hair is shed. At this point, the hair is not actively growing, and after some time, the melanin follicles can re-enter the anagen phase, restarting the cycle.

The other options present different concepts related to hair and grooming, but they do not represent the biological phases of hair growth. "Growth, dormancy, and shedding" sounds similar but lacks the specific terminology used in the study of hair biology. "Root, shaft, and end" refers to parts of hair structure rather than