facial_marks → facial_mark
facial_makings → facial_mark
facial_tattoos → facial_mark
facial_tattoo → facial_mark? (unused atm)
It seems that a lot of images are also simply using tattoo where facial_mark would have been more accurate, provided the taggers knew.
I'll be writing it in the wiki if this passes.
EDIT: Jesus there's a face_paint tag it's getting confused with as well.
Updated