Which phase is resting?

Which phase is resting?

• A. Anagen
• B. Catagen
• C. Exogen
• D. Telogen

Answer: (D)

Resting refers to the period when the hair follicle is not actively growing a new hair shaft. That phase is telogen. In the hair growth cycle, hair begins in anagen (the active growth phase), transitions through catagen (a short regression phase), then enters telogen (the resting phase), and finally exits telogen via exogen when the hair sheds as a new cycle begins. In laser hair removal, treating during anagen is most effective because the follicle is actively growing and the hair is attached, making it more susceptible to the laser. Telogen hairs are dormant and less responsive to treatment, which is why recognizing the resting phase as telogen is important.

Resting refers to the period when the hair follicle is not actively growing a new hair shaft. That phase is telogen. In the hair growth cycle, hair begins in anagen (the active growth phase), transitions through catagen (a short regression phase), then enters telogen (the resting phase), and finally exits telogen via exogen when the hair sheds as a new cycle begins. In laser hair removal, treating during anagen is most effective because the follicle is actively growing and the hair is attached, making it more susceptible to the laser. Telogen hairs are dormant and less responsive to treatment, which is why recognizing the resting phase as telogen is important.