Full 3 month supply. Longer-looking lashes start with the Babe Lash Essential Serum. This award-winning eyelash serum is their #1 best-seller and has a highly devoted following for one reason: it works! If you’ve wanted your lashes to look longer and more fluttery, all without needing extensions or falsies, consider this your sign to try the Babe Lash Essential Serum.