Are your lashes thinner than they used to be? Do they seem lighter and shorter? Latisse is a prescription eyelash product approved in Canada to grow natural eyelashes fuller, longer and darker. Visible results happen as early as eight weeks, with full effect in 12-16 weeks. Latisse is believed to prolong the anagen phase, which is the active growth phase, which is the active growth phase of the eyelashes. Latisse will help you grow fuller, longer and darker lashes!