I am just afraid that if treatment stops I will lose what I have grown.
If you have been using Latisse for several months and have seen nice improvement in thickness and length of your eyelashes, it is now time to switch to what I call a "maintenance dose" which you should continue indefinitely. What I recommend is applying Latisse in the usual manner(to the upper eyelash margin only) 2 or 3 times per week instead of every day. If you discontinue Latisse entirely your eyelashes won't immediately fall out, but do know that everyones eyelashes are naturally replaced about every 10-12 weeks, so if you have stopped Latisse, the next set of lashes you grow will be your "old" type. I think the maintenance dose is the right way to go, and allows you to keep the cost of bountiful eyelash growth under control indefinitely.