Introduced in 1932, Couto Toothpaste has been "on everyone's mouth" ever since, as their advertisements say. The fresh and minty fluoride-free formula was created in Porto by Alberto Ferreira do Couto, a pharmaceutical manager, along with the help of a dentist friend. Focused on highlighting traditional products of Portugal, the small, Lisbon-based, women-owned shop A Vida Portuguesa has now reintroduced it to a new generation. The classic packaging remains unchanged, with a bright yellow box housing the silver aluminum tube. Not tested on animals. The A Vida Portuguesa Couto Toothpaste is available in sizes Small (0.88 oz.) and Large (2.1oz.).