Why Tallow? Tallow (rendered suet from cows) has been used in many ways for thousands of years. Close to our own skin biology, Tallow is full of healthy vitamins A, D, K, and E, is non-greasy, yet hydrating and does not clog pores. Most individuals with sensitive skin have amazing results using tallow based products and soaps on their skin and face. With ZERO chemicals, you can't get more skin-healthy than this.