375, I am getting a bit mixed up lol
potassium, which I should get from the chemist, does it come as a solution or in crystal form ? If it is crystal, how much water should I mix it with ?
i am getting the peroxide from my sister in law who is a hairdresser, I assume this is the really strong stuff ?? Do I need to dilute that ? I will be putting it on with cotton wool
thanks for your help, and sorry for being a pain in the a*s !