Abstract: This invention relates to a brush conventionally based on a metal wire (1) folded on itself and twisted in a spiral to form an attachment core (6) for fiber tufts forming the brush itself, the main characteristics being that it includes two types of fibers, namely plastic fibers (4) for example made of nylon, and vegetable fibers (5) for example made of cotton, linen or the like. The tufts of both types fibers (4-5) are laid out alternately such that the vegetable fibers (5) “stock” the makeup product, thus facilitating impregnation of the plastic fibers (4) when these plastic fibers come into contact with the user's eyelashes, making it possible to apply the mascara in a single pass.