Hynos is a Vietnamese toothpaste brand. The brand was originally sold in South Vietnam, Cambodia, Laos, Thailand, Singapore and Hong Kong,[1] and still exists today.[2] Hynos was known for its innovative advertising techniques, which included the use of billboards, film, and jingles.[3][4]
The brand is known for being featured in several billboards, the most prominent of which show an African man grinning widely with shiny white teeth (similar to the Darlie Toothpaste logo). A scene involving one of its factories in the 1987 film, Full Metal Jacket, where fighting between US Marines and the Viet Cong breaks out in the South Vietnamese city of Huế.