A pioneer black manufacturer, Overton established Hygienic in 1898 and produced baking powder, extracts, and toilet preparations. After moving the firm from Kansas to Chicago, he began to manufacture a full line of cosmetics and perfumes under the High-Brown Products label. He parlayed his early success with Hygienic into a highly diverse conglomerate, including The Great Northern Realty Company, The Chicago Bee, and the Victory Life Insurance Company. This was the first major conglomerate led by an African-American.