Castile soap originated in the Castile region in Spain. It was originally an all olive oil only soap. It has morphed through the years to be a vegetable & nut oil based soap. Our Lavender Castile Soap is made with our Lavender Hydrosol. It has a slight, natural lavender scent. The castile paste ingredients are … Continue reading 9 Liquid Castile Soap Uses and Dilutions