I used it everyday for a while to remove excess sebum... made my head very itchy and seemed completely counter productive as any sebum it removed was replaced by itchy and small spot like lumps.
I personally wouldn't recommend using it every day as its quite a harsh product
I for one gave up Nizoral. I found that every time I washed my hair using it, I would lose 50+ hairs that same day. Almost as if it over dried my scalp or something. This and anything containing "Keto" would make me shed and cause acne on my scalp.