One eyeliner. Endless possibilities. Yves Saint Laurent Couture Eye Marker is designed for an application so simple; you'll want to wear it every day. The fool-proof applicator contains a precision tip to draw thin lines with ease, and a flat surface on the side for thick bold lines. Intense black color glides on in a single stroke, staying put all day and night for dark eyes until dawn. 0.5 oz. Made in France. Ask the experts. Our Beauty Advisors are here to help. Send an email to. YvesSaintLaurentBeautySpecialist@s5a.com.