Kenogen

The study introduced the concept of "kenogen," a phase where the hair follicle remains empty after teloptosis. This phenomenon was observed in 10 males over 14 years, where kenogen lasted 4 to 7 months, affecting 80% of hair cycles. In 2 women with androgenetic alopecia, kenogen affected 22% of follicles, lasting 3 months to 1 year. In a prepubertal boy, it involved 8% of hairs, lasting about 2 months. The study concluded that kenogen is a resting phase of the follicle, with increased duration and frequency in androgenetic alopecia, potentially contributing to baldness. This phase represents an alternative hair cycle route, distinct from the classical cycle.