The most volumizing mascara by Yves Saint Laurent. The Shock mascara coats each lash with maximum volume in just one stroke and without clumping. The hourglass shaped brush allows more of the exclusive shock formula to grab hold of lashes. With brilliant, high intensity color, this longwear mascara will give you dramatic lashes that won’t smudge.How To Apply:Start applying at the root of the lash on the outside of the eye. Touch the brush to the lash pushing upwards and outwards at the same time. The Shock is buildable and you can pump up the volume by adding stroke on top of stroke.