Morty is in the process of cleansing a body prior to embalmi…

Morty is in the process of cleansing a body prior to embalming. As he washes the face he notices that the skin separates in the check area. He is alarmed at this because this is the first time he has seen skin slip in such a noticeable area. He gathers his thoughts and prepares a plan for treatment. He knows that skin slip is a result of: