Ok so I've heard good things. Just bought a small bottle of no3. It's bloody expensive but wouldn't be adverse to doing it again if it works. I've long hair so I reckon I'll get 2/3 treatments out of it ?
So I just apply it to wet hair in the bath, leave it for 10 mins and rinse? Am I missing anything ? Is there a better way to do it and how often do you use it ?