•Brand New in Box Never Used! Full Size Grande Cosmetics Grande Lash MD Lash Enhancing Serum. ☆Product Description: •GrandeLASH-MD Lash Enhancing Serum is an iconic serum proven to promote the appearance of longer thicker healthier looking lashes. From Grande Cosmetics, #1 Lash & Brow Serum Brand in the US*. Powered by a proprietary lash complex this serum syncs with the natural lash cycle for luxury-level lashes.