Together with Willoughby D. Miller, Newell Sill Jenkins developed the first toothpaste containing disinfectants, branded as Kolynos. The name is a combination of two Greek words, meaning "beautifier" and "disease preventer". Numerous attempts to produce the toothpaste by pharmacists in Europe proved uneconomic. After returning to the US, he continued experimenting with Harry Ward Foote (1875–1942), professor of chemistry at Sheffield Chemical Laboratory of Yale University. After 17 years of development of Kolynos and clinical trials, Jenkins retired and transferred the production and distribution to his son Leonard A. Jenkins, who brought the first toothpaste tubes on the market on April 13, 1908. Within a few years the company expanded in North America, Latin America, Europe and the Far East. A branch operation opened in London in 1909. In 1937, Kolynos was produced in 22 countries and sold in 88 countries. Kolynos has been sold mainly in South America and in Hungary. Colgate-Palmolive took over the production of American Home Products in 1995 at a cost of one billion US dollars.
Together with Willoughby D Miller Newell Sill Jenkins developed the first toothpaste containing disinfectants branded as Kolynos The name is a combination of two Greek words meaning "beautifier" and "disease preventer" Numerous attempts to produce the toothpaste by pharmacists in Europe proved uneconomic After returning to the US he continued experimenting with Harry Ward Foote (1875–1942) professor of chemistry at Sheffield Chemical Laboratory of Yale University After 17 years of development of Kolynos and clinical trials Jenkins retired and transferred the production and distribution to his son Leonard A Jenkins who brought the first toothpaste tubes on the market on April 13 1908 Within a few years the company expanded in North America Latin America Europe and the Far East A branch operation opened in London in 1909 In 1937 Kolynos was produced in 22 countries and sold in 88 countries Kolynos has been sold mainly in South America and in Hungary Colgate-Palmolive took over the production of American Home Products in 1995 at a cost of one billion US dollars