I think one can use it on the face since it will help remove the dead skin cells to give you a radiant skin and it is made without any preservatives. It is said to naturally care for the body and face as well. Read more: http://sabonnyc.com/index.cfm/a/article.show/artid/165.
You could but the whole point of a body scrub is to moisturize while exfoliating. Sometimes the oils in those body scrubs are a little much for your face. If you're unsure, ask the company or just find a good face scrub.