LASH EXTENSION Mascara - now in a waterproof version! Our WATERPROOF LASH EXTENSION Mascara scores top marks for its ability to make people think you're wearing false lashes. WATERPROOF LASH EXTENSION Mascara creates its lengthening lash look by being enriched with special polymers that grip the lashes and stick, so you can quickly build up the length of your lashes with just a few strokes. Build-in mirror for easy touch ups on the go.