Maintenance of Optimized Hair Growth from Viable Terminal Scalp Hair Follicles at Baseline with Oral Finasteride in Male Pattern Hair Loss and First Evidence of a Drug Dependency and a Post-Finasteride Rebound Effect

The study found that oral finasteride can improve and maintain hair growth in male pattern hair loss, but interrupting drug intake can lead to a "rebound phenomenon" where hair follicles rapidly degrade and contribute to hair loss. The study suggests that there is a "drug dependency" and "rebound phenomenon" associated with prolonged efficacious hair maintenance.