Catalyst by Halston is a Floral Fruity fragrance for women. Catalyst was launched in 1993. Top notes are Hiacynth, Bergamot, Gardenia and Peach; middle notes are Orris Root, Carnation, Tuberose, Narcissus, Lily-of-the-Valley, Jasmine, Orange Blossom, Rose and Orchid; base notes are Cedar, Sandalwood, Amber, Musk and Vanilla.