Thank you for all of your questions. This situation seems to be a bit of a problem in the sense that you will seldom see people reaching the end of their mascaras. It is advisible to change your mascara every 3 months for hygiene purposes thus I havent come across someone using their mascara until the end. I would probaby say rather just get a new one, it will benifit you in the long run.
Stay Beautiful…Indulge Yourself