|Edward Topsell, The History of|
Foure-Footed Beasts (1658)
"A Dentrifice to whiten the Teeth. Take of Harts-horn and Horses Teeth, of each two 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 Tragacinth, and rub the teeth therewith."
Hannah Woolley, The Accomplish'd Lady's Delight (1675)
Why buy whitening toothpaste when you can make your own? A few treatments with toasted horse teeth and mucilage, and a shimmering smile can be yours!