The water in my new apartment is awful city water, with decade old pipes. My hair consistently felt dirty, even right after I shampooed it. I got highlights and two weeks later you couldn't even tell. I used to use the Malibu Swimmers treatment when I was on the swim team, so my hairdresser recommended the Blondes treatment. It works so well! My hair is super soft again and my highlights are as bright as ever! Thanks!