A single coat of the PureLash Lash Extender and Conditioner before applying mascara will help strengthen, lengthen and thicken your lashes, making the mascara twice as effective. Can also be used on eyebrows and worn alone at nighttime as a lash conditioner. Get natural-looking, extra-long lashes that are thick and feathery using jane iredale's PureLash Lengthening Mascara. The mascara conditions and strengthens while the dual-edged brush makes it easy to maximize lashes top and bottom.