Today I started my first use of nizoral shampoo and my hair feels much fuller does it do this for anybody else. I thought this shampoo was mainly for scalp improvement. Also how long do you leave it in? How many times a week do you suggest I use nizoral? I did not get any redness or irritation yet but I have heard of others with this problem. Can anyone suggest any supplements to take with propecia if I get any side effects.