I used some when I was in the hospital for an extended time and couldn't shower. It's "ok". It did help get some of the oil and smell out, but not like a real shampoo by any means.
I bought the Oscar Blondi stuff the last time I was in Sephora since I have thick hair that gets frizzy easily. I agree it 'works' but it does do the same as regular shampoo. I do think it was worth it though.