I had Kerastraight done about a month ago and will run out of their conditioner on a week or two. Is there any conditioner on the highstreet that does not contain both salt and sulphates? There seem to be a lot of sulphate free ones these days but I’m finding sodium chloride in the ingredients list of all of them. I don’t want to have to pay for an expensive one - surely there must be something I can just pick up from Boots by now?