A short, fact-based explainer on the plant-derived surfactant that does most of the work in The Every Spray.
Castille soap is one of those ingredients that sounds romantic on a label and gets fuzzy when you ask what it actually is. Here is the short version.
The definition
Traditional castille soap is a soap made from olive oil, originally produced in the Castile region of Spain. Today the term is used more broadly for soaps made from vegetable oils — olive, coconut, hemp, jojoba — rather than animal fats.
What it does in a cleaner
Castille soap is a surfactant. Surfactants are molecules with a water-loving end and an oil-loving end. They break the surface tension of water, surround particles of grease and grime, and let everything rinse away together. That is most of what cleaning is.
Why we use the organic version
Conventional surfactants in commercial cleaners include SLS (sodium lauryl sulfate), SLES (sodium laureth sulfate), and synthetic detergents derived from petrochemicals. They work, but they are harsher than they need to be and can leave residue. Organic castille soap does the same job at a milder pH, biodegrades cleanly, and does not require a hazard symbol on the bottle.
What it does not do
Castille soap is not a disinfectant. K.SANT does not claim to kill 99.9% of germs. We claim to clean. Add specific independent test data here once available.