If you stop using Latisse after you get the results you want, will the lashes lose the length and fullness from it?

When you discontinue Latisse your eyelashes will slowly decrease back to the original length and thickness. An option to keep long lashes is to use Latisse on a maintenance schedule which requires application 1-4 x week. 

Yes, your lashes will go back to their original length and fullness if you choose to stop using Latisse. In order to keep the results of Latisse it must be used regularly. 

Latisse does need to be applied on a consistent and regular
basis. If you stop using the product, your lashes will return to their normal
length and fullness.All hairs in your body go through cycles of growth and rest.
This includes the lash hair in your eyelids. During the growth part of the
eyelash hair cycle, building block materials (like proteins) are harnessed and
utilized to grow the shaft. There is a certain amount of time that is allowed
for this. Latisse works by prolonging this window of time. Therefore,
stopping the use of this drug will cause the hair growth cycles to return to
their normal phases of activity. As
an alternative to, Latisse, you may want to consider an eyelash hair transplant
surgery like this patient.