Castile soap is a type of soap made primarily from olive oil, although it can also include other vegetable oils. Originating from the Castile region of Spain, it is known for being gentle and biodegradable, making it a popular choice for those seeking natural cleaning products. This soap is versatile and can be used for various purposes, including body wash, household cleaning, and even as a shampoo. Because it is free from synthetic ingredients and harsh chemicals, Castile soap is often favored by people with sensitive skin or those looking for eco-friendly alternatives.