From Calvin Klein, CK One is a 1994 citrus aromatic EDT by perfumers Alberto Morillas and Harry Fremont — one of the most influential fragrances ever made and the one that essentially invented the modern unisex category. The top hits with a bright, fruit-forward rush of lemon, bergamot, mandarin, pineapple, cardamom, and papaya — clean, zesty, and immediately recognizable. The heart blooms into a soft, mixed-gender floral of lily of the valley, jasmine, violet, rose, freesia, and nutmeg — complex enough to be interesting, light enough to never feel heavy. Green tea, musk, cedar, sandalwood, oakmoss, and amber wrap the dry-down in a clean, barely-there warmth that's become one of the most copied base structures in fragrance history. Fresh, unisex, and completely timeless. 3–5 hours, soft projection. Best in spring and summer — a genuine icon that still holds up 30 years later.