About a couple of years ago I got my first outbreak of psoriasis. Although my skin eventually cleared up, my scalp didn't. I tried using some prescription stuff my docto gave me, but the psoriasis wasn't responding to the treatment. The dead sea shampoo was recommended by several psoriasis sufferers, so I decided there was no harm in trying it out. Amazingly my psoriasis cleared up within a few weeks and stayed away! Unfortunately my scalp psoriasis has returned, but at least I know I have something reliable to turn to.
More generally as a shampoo, it smells great (in my opinion), but it doesn't lather so well. That may be due to my living in a hard water area though.