* Prep lashes with Lancome's Cils Booster XL Eyelash Primer. * Hold Monsieur Big Mascara wand horizontally by eyelashes. * In an upwards swiping motion for top lashes, and downward swiping motion for bottom lashes, apply mascara. * Layer as desired to achieve 12x the volume (from bare lashes), and intense black pigment. How to Use Primer: * Apply from roots to tips of eyelashes. Do not wait until Cils Booster XL is dry before coating lashes with mascara. * Coat lashes with mascara for desired look, or until white primer is no long visible. * For a optimal color, intensity and a false-lash look, apply two coats of eyelash primer to bottom and top lashes, before applying mascara.