If you have hard water, this is a life saver. This saved my hair, so I swear by it. My hair was the consistency of straw by the time I discovered this. I was getting ready to cut it all off. One treatment will make a huge difference! Once you feel like you you have gotten rid of all the junk in your hair buy a water filter for your shower. I would also recommend using a hard water treatment packet once a week for maintenance.