Saponification is the process of the human body partly or completely turning to soap. The fatty tissue and the liquid from putrefaction gradually form into adipocere, which is also known as grave wax. This process can happen to emabalmed and non-embalmed bodies. It is most common with those who are overweight. The photograph above is of “The Soap Lady” who is housed at the Mutter Museum. She is entirely composed of grave wax.