I had seriously dry, itchy, flaky scalp, and I tried numerous OTC products as well as getting a prescription shampoo from my doctor. I tried this 2 months ago, and I felt instant relief. After a couple weeks, my scalp was completely normal. I now use this shampoo a few times a month. I read reviews elsewhere where people stated they didn't like the smell, but it really doesn't bother me, and it doesn't linger in your hair once you are out of the shower anyway. I would highly recommend this shampoo, and I think it is well worth the cost.