Utah Master Esthetician Practice Exam

During which phase of hair growth should eyelash extensions not be applied?

1. Anagen

2. Telogen

3. Catagen

4. Interphase

The correct answer is: Anagen

Eyelash extensions should not be applied during the telogen phase of hair growth, as this is the stage where the hair is in a resting state and is preparing to shed. During the telogen phase, the hair follicles are not actively producing new hair, which means the eyelashes are more prone to falling out or shedding. Applying extensions at this time could result in a higher likelihood of damaging the natural lashes or causing discomfort, as the natural lashes are not securely anchored. In contrast, the anagen phase is the active growth phase where the hair is healthiest and most securely attached, making it a suitable time for lash extensions. The catagen phase is a transitional stage where growth stops, and while it's not ideal, it may still allow for some application depending on the specific condition of the natural lashes. Interphase is not generally recognized in hair growth terminology in the context of eyelash application. Understanding these phases helps estheticians make informed decisions regarding the application of eyelash extensions to ensure the health and safety of the client's natural lashes.