Zero Toxics Knowledge Base
CASTILE SOAP is a fine, hard white or mottled soap made with olive oil and sodium hydroxide. It is named after the olive oil-based soaps originating in Castile, Spain.
Castile soap is made exclusively with vegetable oils. There will be no lard, tallow, or other animal fats in a Castile soap. Traditionally, a Castile soap was made with 100% olive oil, but modern Castile-style soaps, including Dr. Bronner’s, blend in other vegetable oils, like coconut. https://nwedible.com/how-to-make-diy-liquid-castile-soap/
Castile soap is widely considered to be safe and nontoxic, and has many uses for body and home.
Castile soaps are made with organic oils and non-organic oils. If the castile soap is made with organic soap, it would indicate that on the label.
Castile soap is often found as a base for soap products, in which case you can assume it’s a vegetable-based soap product,
THE HEALTHY HOME ECONOMIST: What is Castile Soap and is it Really s Green Choice?
A very informative article on the history of Castile soap, various types currently being sold, and ingredients to watch out for and avoid.
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