Phosphorus in its pure state should be very cautiously handled; as,
unless used very moderately, it will burn the skin. By adding to it,
however, six parts of olive oil, it may be employed with perfect
safety. If every part of the face, except the eyes and mouth, which
should be kept shut while applying it, be anointed with this mixture,
it will give the party a most frightful appearance in the dark. The
eyes and mouth will seem black, and all the other parts of the face
will appear lighted with a sickly, pale-bluish flame.