The measurements depend on your hair length. My hair is a little past my shoulders, and I have to make two "servings" for my hair. For the baking soda mix, get a cup. Add (for one serving) 3 tbsp. and then three times as much water. (9 tbsp) you will use this as a shampoo. In The picture it is not stirred, but before putting it in your hair, stir it.