How to Whiten Your Teeth, 1607
That Unicornu fossile is definitely legit.
Michael Bernhard Valentini, Museum museorum (1714)
The horne of an Vnicorne being beaten and boyled in wine, hath a wonderful effect in making the teeth white or cleare, the mouth being well clensed therewith.
Edward Topsell, The Historie of Foure-Footed Beastes
Wine and unicorns really do make everything better, don’t they?
Wow; I knew unicorn horns could be used to detect and neutralize poisons, but not that they could whiten teeth. Is there anything they can't do?
I guess they mean white wine. Wish they published the recipe so I could use up this unicorn horn I've been saving.