What it is: A lash primer-serum that boosts volume, length, curl and definition for lashes that appear oversized and revitalized.What it does: The serum improves mascara performance with a four-in-one formula that lengthens, volumizes, curls and defines, for lashes that appear oversized, immediately and for 24 hours. How to use: Apply the lash primer-serum on bare lashes. For best results, apply your mascara immediately over the primer-serum without waiting for it to dry. To maximize the fortifying and nourishing care benefits, apply the primer alone and wear it all night as a serum. Repeat this routine daily to maximize effectiveness. 0.3 oz. Made in France