CK One is a citrus aromatic chypre unisex fragrance developed by Alberto Morillas[1] and Harry Fremont for Calvin Klein.
CK One's top notes include pineapple, mandarin orange, papaya, bergamot, cardamom and lemon. Its middle notes include nutmeg, violet, orris root, jasmine, lily-of-the-valley and rose. Its base notes include sandalwood, amber, musk, cedar and oakmoss.
The fragrance is considered to be a unisex fragrance,[2] and was the first unisex fragrance to gain wide popularity in the US.[3] It has also been described as the first fragrance to be openly marketed as unisex.[4]
CK One was launched in 1994.[5] It became a best-seller, making more than $5 million in its first 10 days.[6] It generated about $90 million (USD) annually in the mid-1990s.[7] As of 2007, the scent's sales in the United States were still about $30 million annually.