Just marketing an iris scent for men (the flower’s smell is a total synthetic conceit and one usually reserved for women) was an act of creativity. But Dior Homme is also subtle and spectacular. Iris, handled correctly, is liquid good taste. Bois d’Iris by the Different Company is an austere iris, and Iris Poudre by Pierre Bourdon for Frederic Malle is a velvet iris. All are breathtaking. In Dior Homme, its perfumer, Olivier Polge, has used a light, assured, masterly touch to turn out an iris that has the grace of a Japanese maple and the careful, muscular cool of a leopard.