Two bodies. two minds. and two souls are merged into the heat and passion of one: Ck One by Calvin Klein is a beautiful unisex fragrance. This erotic cologne combines man and woman with one provocative scent. and does so through the clean. refreshing combination of citrus. green. and woody accords. The top notes are pineapple. mandarin. bergamot. lemon. cardamom. papaya. and green notes.