If you stop using Latisse completely, your lashes will gradually return to the length they were before. There are approximately 100 to 150 eyelashes on each upper eyelid. The growth of eyelashes is cyclical, going through 3 stages: a growth phase, a transition phase, and a resting phase. At any given time, numerous hair follicles can be found in each of the different stages. The growth phase of an average eyelash hair is approximately 1 to 2 months. Latisse has been shown to increase the amount of time each eyelash hair remains in the growing phase. After several months, when you have achieved the look you want, I recommend using Latisse 2 to 3 times per week to maintain your longer lashes.