Smashbox Photo Finish Extension Nourishing Lash Primer helps preserve a fuller lash look while nourishing and conditioning eyelashes. The lash-boosting primer with mascara-gripping power improves mascara wear and reduces smudging for 24 hours while nourishing eyelashes. The curved, soft-bristle brush evenly coats and separates lashes for sculpted definition. The buildable formula helps maintain volumized, longer-looking eyelashes.