Begin by adding the castile soap directly into your foaming soap dispenser. I use a funnel to prevent spills, but if the top is wide enough on your container, just pour it right in.

Next, add in your essential oil. (note, the fragrance is optional, and the soap will be just as effective without it)

Finally, top it off with water, leaving about a half inch of space at the top.

Secure the pump top and shake well!