How to Whiten Your Teeth

1686

“A Dentrifice to whiten the Teeth. Take of Harts-horn and horses Teeth, of each 2 ounces, Sea-shells, common Salt, Cypress-Nuts, each one Ounce; burn them together in an Oven, and make a powder, and work it up with the mucilage of Gum Tragacanth, and rub the Teeth therewith.”

Hannah Woolley, The Accomplish’d Lady’s Delight

And now you know how whitening toothpaste is made.