: castile soap

Castile soap is one of the simplest, cleanest types of soap available on the market and can be used for a wide variety of things. Originally from the Castile region of Spain, castile soap is made from olive or vegetable oil and sodium or potassium hydroxide (depending on whether it is in bar or liquid form). Popular brands of castile soap include Dr. Bronner’s Pure Castile and Kirk’s Original Castile, though many varieties can be found in stores.