In the Roman era, even men painted their lips with lipstick to indicate their social rank. A study conducted in 1991 revealed that woman politician who hired Hollywood makeup artists were more likely to win their election campaigns for 30%. An average woman uses a dozen of beauty care products that contain 168 chemical ingredients daily. An average man uses just 6 products with 85 ingredients. The first roll-on deodorant was invented in 1952. The first hairspray for the mass market was launched by L’Oreal in 1960. The Aztecs would use dried cochineal beetles to dye their eyes and lips red. Ancient Romans made black hair dye by fermenting leeches in vinegar.