* Anagen (Growth Phase): This phase lasts about 4 to 11 weeks. During this time, the eyelash actively grows.
* Catagen (Transition Phase): This phase lasts about 2 to 3 weeks. The eyelash stops growing, and the hair follicle shrinks.
* Telogen (Resting Phase): This phase lasts longer, about 3 to 4 months. The eyelash is fully grown and remains in place while a new hair begins to form in the follicle beneath it.
* Exogen (Shedding Phase): This is part of the telogen phase, where the old eyelash sheds, and the new one grows in.
Overall, it takes approximately 4 to 11 months for an eyelash to complete its growth cycle and be replaced.