Yves Saint Laurent presents a new beauty must-have! A unique design. Rouge Pur Couture The Slim reinvents the lipstick with its ultra-slim, square shape that impresses with its absolute precision in application and its long-lasting coverage. With an innovative, edgy pencil and a gentle formula, lips are simply set off to perfection. A supple feel that adapts to the individually flexible movements of the lips throughout the day. The texture is so gossamer and feather-light that you don't notice it at all after application.