Use distilled or boiled water. You can use tap water if it will be used up within a few weeks.
For the Castille Soap, I used Dr. Woods Pure Black Soap with Organic Shea Butter.
Add 1 oz. Castille Unscented Soap to 1 cup distilled water.
Add up to 1/4 teaspoon essential oil of your choice.
Stir gently and pour into pump dispenser.
Foaming Hand Soap
Liquid Castille Unscented Soap
1/2 tsp olive oil
Up to 1/4 teaspoon Essential oils of your choice
Foamer Pump Dispenser
Fill the soap dispenser to about 1 inch of the top (leaving room for the bulky foaming pump and the soap to be added).
Add at least 2 tablespoons of liquid castille soap to the water mixture.
Add the oil and any essential oils if you are using them.
Close and lightly swish to mix.