Instruct: Classify the given Amazon review into its appropriate rating category
Query: Amazing itch relief, difficult to rinse out

I have mild eczema on my scalp, but there are certain times that the itch is so painful that I want to scratch myself bloody. I found this shampoo a couple years ago, and I tried it because it's color-safe. It worked miracles. Soothed considerably with the first wash, and within three uses I felt absolutely no irritation. I was then able to control my symptoms with once-a-week use and my regular shampoo the rest of the time. I do agree with other reviewers that the formula has changed, however. While it is still very soothing and will leave your scalp very clean, it seems to stick to your hair. It's really difficult to fully rinse out with just water and leaves an greasy-feeling residue behind if you don't shampoo a second time with an alternate product. I think that's a small inconvenience for to the fantastic symptom relief I still get, though, and I will still continue to buy it.