Natural Scalp Hair Regression in Preclinical Stages of Male Androgenetic Alopecia and Its Reversal by Finasteride

January 2006 in “ Skin Pharmacology and Physiology ”

D. Van Neste

androgenetic alopecia finasteride hair growth anagen phase follicular units hair regression short cycling AGA Propecia

TLDR Finasteride reverses early hair loss and promotes growth.

This document summarizes a study on male androgenetic alopecia (AGA) and the effects of finasteride on hair growth. The study found that natural scalp hair regression occurs in the preclinical stages of AGA, and that finasteride can reverse this regression and promote hair growth. The study also identified a subset of follicular units that produce a small number of hair fibers with a short duration of anagen phase, which may be predictive of short cycling. Overall, the study provides insights into the mechanisms of AGA and the potential benefits of finasteride in promoting hair growth.

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