Both Dutasteride  vs Finasteride reduce DHT production by inhibiting the action of 5α-reductase, thereby preventing hair loss. Finasteride was the first FDA-approved product to treat hair loss based on the 5α-reductase pattern, and Dutasteride came about 10 years later than Finasteride, so while we were learning about Dutasteride, You can’t avoid comparing it to Finasteride. So what are the effects …