Calvin Klein Ck One Cologne, Clean, pure and egalitarian in its design, CK One remains an iconic Calvin Klein scent and a go-to for the edgy urban set. The first majorly successful unisex fragrance, this aromatic chypre blends just enough green notes, succulent fruits and musky essences to create a fragrance that complements him or her. Top notes of crisp bergamot, juicy pineapple and fleshy papaya melt into a floral heart heavy in romantic rose, jasmine and violet. A touch of nutmeg gives way to a base of erotic musk and dewy amber.