 In a base of dilute ethanol (70–90%), eau de cologne contains a mixture of citrus oils including oils of lemon, orange, tangerine, clementine, bergamot, lime, grapefruit, blood orange, and bitter orange.It can also contain oils of neroli, lavender, rosemary, thyme, oregano, petitgrain (orange leaf), jasmine, olive, oleaster, and tobacco.In contemporary American English usage, the term "cologne" has become a generic term for perfumes usually marketed toward men.