Yes, we use the "old fashioned" tried and true method of soap making.  By technical definition, soap, is an alkali of a fatty acid--which is the end result of mixing lye and fats.  Interestingly enough, a majority of the "soap" in the soap isle is actually a detergent by the FDA's definition.  Sorry, soap nerd moment.  For further reading on the FDA's definition between a soap and a detergent, you may visit here:  Soap vs Detergent.