Stopped by the perfume counter lately? Better set aside more than your lunch hour if you do. Led by the great French houses--Guerlain, Chanel, Christian Dior and Lancome--the perfume industry has become a hothouse of innovation, churning out literally hundreds of new fragrances, some of them designed to blossom and fade in the marketplace in about the same time span as the flowers that provide their essence. Fragrance, says perfume expert Michael Edwards, has become a "fashion accessory. Companies are mining and reinventing their heritage."
Take Philtre d'Amour, for example. Touted by Guerlain as a limited-edition scent for the first year...