William Procter and James Gamble founded Procter & Gamble in Cincinnati in 1837 by making and selling soap and candles. They formalized their partnership in 1837. In the 1850s, the moon and stars symbol began being used unofficially to mark P&G boxes. P&G incorporated in 1890 and expanded nationally and internationally in the following decades, innovating new products like Ivory soap, Crisco, and Tide. It has grown to be a massive multinational corporation with many leading brands in home, health, beauty and other products.