I was apprehensive about buying this but had a feeling that the very hard water from my shower was contributing to my very dry hair. I had reduced heat use, had always bought quality hair products, supplements whatever available. This has made a huge difference and I ended up buying a second to use in another shower.  I noticed within around 2 to 3 weeks that my hair felt much softer, looked less dry and properly hydrated. My hair colour I think looks better but I’m unsure if this actually is the water but as this is all I’ve changed it must have had an effect.  The only problem is that now I hesitate to shower anywhere but at home.  The shower head also comes with everything needed to fit it inside the box, plumbers tape and a wrench which is unbelievable. It’s so easy to install, all I needed was a chair and it was done in a couple of minutes. Fantastic product!