Finasteride works by inhibiting the enzyme 5α-reductase.
This enzyme converts testosterone to dihydrotestosterone (DHT), a hormone strongly linked to hair loss in men. By blocking 5α-reductase, Finasteride significantly reduces DHT levels in the scalp.
- Lower DHT levels mean hair follicles receive less of this potent shrinking agent. This allows miniaturized follicles to return to a healthier, more active state, promoting hair regrowth. The effect is most noticeable in the vertex (crown) and temporal (temple) areas, commonly affected by androgenetic alopecia.
It’s crucial to understand that Finasteride primarily Prevents further hair loss. While it can stimulate some regrowth, its main action is halting the progression of hair miniaturization.
Results vary from person to person, depending on factors like age, genetics, and the duration of hair loss. Consistent use is key for maintaining the benefits. Discontinuing treatment usually leads to a return to the previous rate of hair loss.
Remember, Finasteride’s effectiveness is rooted in its specific action on DHT. It doesn’t address all causes of hair loss, and individual responses differ.
