I had really oily scalp but after about 4months in propecia it was less oily plus i used minoxidil which dries my hair and scalp.I also tried low dose of accutane and it did nothing good.
Don't over use nizoral it could irritated and worsen your condition i thinhk that twice a week is fine and use a mild shampoo every other day.My scalp is still a bit oily but more manageable