My hair and scalp would get insanely oily before I started taking Dutasteride. Before I started any legitimate treatment for my male pattern baldness, I was losing so much hair that there would be hair all over my bed, and a lot of it would be getting into my mouth and nose making me cough and sneeze, it was disruptive while I slept at night. I would also rub the top of my head over my bathroom sink just a couple of times and easily 200+ hairs would fall out, and it would also feel embarrassing when I wore white shirts since I have dark colored hair and shedding was very noticeable since many hairs kept falling on my shoulders.
About my oily hair and scalp before any treatment, I would wash my hair and later on within the same day, it would be like as if a lot of oil was rubbed on my head. It was a nightmare putting up with such an itchy oily scalp along with massive shedding. Fortunately getting on Dutasteride, the 5-AR inhibitor completely got rid of the oiliness of my scalp, so I don't worry about that anymore, and also drastically reduced shedding. I'd also say it got rid of the Androgenetic Alopecia itch by 97-98 percent while before it was constant and was so debilitating. Dutasteride is the treatment I myself personally am most impressed by and happiest with.