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

Eyelash extensions should not be applied during the anagen phase of the hair growth cycle. The anagen phase is the active growth stage where hair follicles are producing new hair. During this time, the natural eyelashes are more likely to be in a state of developing and regrowth, making them more vulnerable to shedding when additional weight and tension from eyelash extensions are applied.

Applying extensions during this phase can lead to potential damage to the natural lashes or cause excessive stress on the follicles, resulting in premature shedding or breakage. For optimal results and to ensure the health of the natural lashes, it is advisable to apply extensions when they are more stable, typically during the telogen or catagen phases, when the natural lashes are not in active growth.