We have two formulations for our bars, and the only difference is in the selection of the oils. Our "original" formulation, the one we started with over thirty years ago, uses tallow, coconut oil, and olive oil. That combination of oils creates a bar of soap that is the best we have found in the world. The second formulation that we use to make our bar soap includes palm oil, coconut oil, and olive oil. As you can see, the only difference between the two recipes is a substitution of palm oil for tallow. Both formulations are available in the 4.25 oz. size and in the 2 oz. size, which is especially convenient for travel or guest soap.