The best Mascara hack - put vaseline on your eyelash curlers! Apply Vaseline or a lip balm to your eyelash curler, curl your lashes, and while you're holding the curler in place, use a clean spoolie to brush your lashes upward. You can use castor oil instead if you're looking for extra conditioning. Apply your mascara afterwards and it holds a curl much longer than a regular mascara application.