'What it is: The most volumizing mascara by Yves Saint Laurent, The Shock coats each lash with maximum volume in just one stroke—without clumping.
What it does: An hourglass-shaped brush allows more of The Shock's exclusive formula to grab hold of your lashes. With brilliant, high-intensity color, this long-wear mascara will give you a dramatic base that won't smudge.
How to use: Start applying at the root of your lash on the outside of the eye. Touch the brush to the lash, pushing upward and outward at the same time. The formula is buildable, so you can pump up the volume by adding stroke on top of stroke.