I totally agree. After years of trying cheap shampoo, being told it’s just as good as anything else, >:( I am through with it, because it makes my hair “dull and unmanageable”, to quote the commercials. My hair is thin, and I have lots of it. My scalp tends to be dry. I need something gentle, as well as a good conditioner to keep the static and frizzies down. All hair is not created equal, and all shampoos are not created equal, either.
I have found, however, that often you can water the good shampoos down and get the same good results. A solution of half water and half shampoo usually does the trick, and if in doubt, shampoo again —
An inexpensive shampoo is no bargain if it makes you ugly!