Achieve the lash and brow goals of your dreams with Woolzies Lash Goals Lash & Brow Growth Serum. This all-natural serum features 100% pure castor oil, a powerful, healing oil. Castor oil repairs your delicate, brittle hair shafts and protects them from damage, allowing your lashes and brows to grow to their full potential. Thick, long, healthy lashes are a few swipes away.