Abstract: An applicator (1) for a cosmetic product (29) comprising a handle (11) and an application nozzle (12), including at least one applicator support (13) and a thumb wheel (15), defining an application roller which is movable in rotation with respect to said applicator support (13), said thumb wheel (15) interiorly comprising a rigid core and on at least a part of its exterior surface, a transfer material (20) or a material for temporarily holding said cosmetic product (29), including a circular application surface of average thickness E, adapted to deposit said product (29) with a line of constant width during the application, said circular application surface corresponding to the larger diameter D of said thumb wheel (15), the thumb wheel (15) having a shaping factor D/E>5. The applicator provides convenient application and leads to a different aspect of the product that is applied.