A different kind of perfumery is emerging. Call it boutique, niche, or indie—fragrance that defines itself against mainstream houses and tastes. A few leaders of the evolution? Frédéric Malle, Serge Lutens, and, more recently, Le Labo, a brand created by Fabrice Penot and Eddie Roschi, who say that their mission is to “make life more beautiful” using fragrance.