What It Is  A fortifying eyelash serum that conditions damaged and over-processed lashes from root to tip and reduces lash loss during makeup removal. What It Does  This lash serum, infused with amino acids, revitalizes lashes including those damaged by daily makeup application, eyelash curlers, false lashes, and lash extensions. Applied twice daily, our lightweight, lash-loving formula refuels and cares for lashes day and night. How To Use  1. Begin with a clean eye area free of makeup. After cleansing and moisturizing skin, apply the lash serum along the upper and lower lash lines (like liquid eyeliner). 2. Next, apply serum from lash root to tip (as you would apply mascara).3. Wait 1 -2 minutes before eye makeup application. Apply 2x a day as a part of your morning and evening skincare routine. Pro tip: For even fuller lashes, apply Cils Booster XL Lash Primer to eyelashes followed by your favorite mascara.