Which term describes the phase where hair is falling out?

The correct term for the phase where hair is falling out is telogen. This phase occurs as part of the hair growth cycle, which consists of three main phases: anagen, catagen, and telogen.

During the telogen phase, the hair follicle is in its resting state, and the old hair is shed. At this point, the hair has reached its maximum length and is due to fall out to make way for new hair growth. This phase typically lasts for a few weeks to several months before the hair follicle enters the anagen phase again to begin the growth process anew.

The anagen phase is when hair is actively growing, and the catagen phase serves as a transitional phase where the hair stops growing and prepares to shed. Interphase is not applicable in the context of hair growth and is more commonly associated with cellular division. Understanding these phases is crucial for estheticians as it helps in managing hair health and addressing client concerns regarding hair loss.