Which hair growth phase is targeted during laser hair removal?

Which hair growth phase is targeted during laser hair removal?

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

Answer: (B)

Laser hair removal primarily targets the anagen phase of hair growth. This is the active growth phase when hair follicles are most receptive to the laser's energy. During the anagen phase, the hair is attached to the follicle, and this is when the pigment in the hair absorbs the laser light effectively. The energy from the laser is converted to heat, which damages the hair follicle and inhibits future hair growth. The other phases of hair growth have different characteristics. The telogen phase is a resting phase where the hair is not actively growing, and therefore, it is less affected by laser treatment. The catagen phase is a transitional phase where hair stops growing and detaches from the follicle, which also makes it less suitable for laser targeting. Lastly, the exogen phase involves the shedding of the hair, meaning it has already been released from the follicle and is no longer suitable for laser hair removal. Thus, focusing on the anagen phase is crucial for the effectiveness of laser hair removal treatments.

Laser hair removal primarily targets the anagen phase of hair growth. This is the active growth phase when hair follicles are most receptive to the laser's energy. During the anagen phase, the hair is attached to the follicle, and this is when the pigment in the hair absorbs the laser light effectively. The energy from the laser is converted to heat, which damages the hair follicle and inhibits future hair growth.

The other phases of hair growth have different characteristics. The telogen phase is a resting phase where the hair is not actively growing, and therefore, it is less affected by laser treatment. The catagen phase is a transitional phase where hair stops growing and detaches from the follicle, which also makes it less suitable for laser targeting. Lastly, the exogen phase involves the shedding of the hair, meaning it has already been released from the follicle and is no longer suitable for laser hair removal. Thus, focusing on the anagen phase is crucial for the effectiveness of laser hair removal treatments.