Ah, of course, yes! Instead of sculpting my toothpaste-enhanced face out of rock, one should of course sculpt it out of mint. Obvious in retrospect.

That reminds me of a silly conversation I had a week or two ago, though I can't quite remember with whom: someone suggested that it should be possible to buy little mints sculpted into the shape of Star Wars stormtroopers' helmets – Mint Imperials :-)