Finasteride is an FDA-approved oral medication that treats hair loss by reducing DHT levels, a hormone that causes follicle shrinkage, helping to preserve existing hair and promote regrowth.
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Finasteride’s primary mechanism involves inhibiting the enzyme responsible for converting testosterone into DHT. Excess DHT is a chief culprit in male pattern hair loss, causing follicles to produce thinner, shorter hair and eventually cease functioning altogether.
By reducing DHT levels, Finasteride protects follicles, allowing them to maintain regular growth cycles. Finasteride’s main benefits include the following:
- Halt in hair loss progression: By minimizing DHT’s influence, Finasteride slows ongoing shedding, especially in the crown and mid-scalp regions.
- Potential regrowth: Some patients notice previously thin areas filling in over time, contributing to a more uniform and fuller appearance.
- Enhanced hair thickness: With reduced hormonal strain, hair strands often regain strength and diameter, improving overall hair quality.