The traditional Indian categories are: Parfum: the most concentrated form of a scent, and thus the most expensive. Eau de parfum: (Oh-da-par-fum) contains less of the parfum oils and is less expensive than parfum. Eau de Toilette: (Oh-da-twah-let) a light version of parfum, suitable for business environments. Eau de Cologne: (Oh-da-ca-lone) the weakest version, best used as a body splash