When it comes to the trend in lash length, long is the one to have. But since we’re not all born with luscious lashes , getting there often requires some trusty reinforcements. There are plenty of OTC tubes that promise a boost in length, but there’s likely one prescription all your friends are talking about, and it goes by the name of Latisse. It’s a prescription-only lash growth serum that works to increase your length and can make your lashes fuller and darker. Latisse if used regularly, its results can be seen as early as 4 weeks.