I used Latisse from Oct-Dec 2009. I didn’t see results until about a month into the process but my eyelashes looked AMAZING by Sept… so long that they actually hit my sunglass lenses! I was thrilled. They were also thicker.(I have blonde eyelashes and was hoping the Latisse would make them darker but no such luck). Anyway, I LOVED the results until I noticed that the Latisse had caused my eyelids to turn red. I tried to ignore it initially. It was worse at night after I washed my face, but the red tone was present all the time. It looked like I had rubbed my eyes really hard or something. After reading the warning on the product packaging saying that Latisse may cause discoloration which«may» be reversible, I decided I should stop using it for a while and hope that the discoloration would, indeed, «reverse.» So, I applied my last application on Dec. 31. My eyelids remained red until mid-February but they have since completely returned to their original tone. The GREAT news, however, is that my eyelashes still look fabulous. My husband even asked me last night if I had started using Latisse again! So, I am three months out and they still look wonderful… all from just the 2 months of using the Latisse last fall. :-) Since I know the redness goes away, I plan to use Latisse for another 2 month period if start seeing the results diminish.