Lash Primer and ThickenerWhen your lashes need a boost try our Lash Primer Thickener under your mascara! This lash fortifier plumps and conditions all in one step. Use at night for treatment or daily under your favorite mascara for extra volume. Why you need it: Visibly increases the thickness of your lashes Fortifies and conditions lashes Can be worn at night as a treatment How it works: This lightweight Lash Primer Thickener works with your mascara to give you the ultimate