Regarding beautiful, healthy hair... There used to be a Doctor on TV in the UK named Dr Miriam Stoppard. She was a Medically trained Dr, but fully believed in working with the human body the way that it was CREATED to work, NOT drug it and injure it. She said that 'The Human body is all SELF Cleansing, but I will just mention Hair here.
She asked for an audience member who would volunteer not to wash their hair for 2 years. After ages and no one seeming willing she asked a girl with extremely long hair she noticed debating it with her friend if she would try it, and she agreed. The following year she returned and said her hair was amazing and you could see a huge difference as well.
She said for 2 or three months her hair smelled musty, which was probably all the toxic shampoo and conditioner coming out. Then it became so healthy thick and shiny it was like her hair was reborn. Two years later, a national newspaper tracked her down to see if she had stayed off washing it. She said it was even better again and she would never ever put soap and water or anything on it as it was fabulous and getting better all the time.
Her friend's who were laughing at her for the first few month's walking around with dull lank smelly hair. All admitted they were NOT laughing now and were all envious of her beautiful tresses.