Catalyst Perfume is a floral green and slightly herbal fragrance that combines top notes of hyacinth, peach and gardenia with middle notes of carnation, orange blossom and orris, all smoothed down by a musky base. Introduced in 1993 by Halston, this flowery and refreshing scent is perfect for self-assured women. Warm and nostalgic, Catalyst is recommended for daytime and casual wear. . . Catalyst Perfume for Women by Halston. Launched by the design house of Halston in 1993, CATALYST is classified as a refreshing, flowery fragrance. This feminine scent possesses a blend of crisp leaves and fresh cut grass. It is recommended for office wear.