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Does the New Hair Start Growing Immediately After Evulsion
Indian Journal of Dermatology, Venereology and Leprology
|February 2, 2017
Summary
Hair follicles do not all enter the growth phase simultaneously. Pulled grey hairs regrow at different lengths, indicating varied follicle cycling in young females.
Area of Science:
- Dermatology
- Trichology
- Hair Biology
Background:
- Hair follicles cycle through distinct phases: anagen (growth), catagen (transition), and telogen (rest).
- The timing of the anagen phase initiation after hair follicle disruption is not fully understood.
Purpose of the Study:
- To investigate the synchronization of hair follicle cycling after hair plucking.
- To determine if all hair follicles enter the anagen phase immediately after evulsion.
Main Methods:
- Grey hairs were epilated from 10 young females on a single day.
- Regrowth lengths of plucked hairs were measured after 3-5 months.
Main Results:
- Significant variation in the lengths of regrowing hairs was observed among individuals.
- Measured regrowth lengths suggest asynchronous entry into the anagen phase.
Conclusions:
- Hair follicle evulsion does not trigger immediate, synchronized anagen initiation in all follicles.
- Individual hair follicles exhibit independent cycling patterns following plucking.
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