Latisse is the perfect safe and effective procedure for those looking to achieve longer, fuller, and darker eyelashes. As the treatment progresses, you'll first begin to see changes in length. Then, gradually, you'll notice more thickness and darkness in your lashes. If you're satisfied with your results by week 8, don't stop there. Stick with the treatment. After week 16, you'll see the full effect of Latisse solution — and so will others. After that, you can talk to your doctor about ongoing use.