Latisse is well-known to enhance existing eyelashes - to make them darker, thicker and longer. It does not create new eyelashes - its a very effective medicine, but not a miracle worker ;)
It is known that Latisse extends the growing phase of your existing eyelashes. The result for you is longer, fuller, darker eyelashes that won't run or smudge even when you swim, exercise, or get teary eyed. Improvements from this product appear gradually as eyelashes grow in and are replaced. In as little as 4 weeks, you should begin to notice your lashes becoming thicker and fuller. These improvements will continue as lashes grow longer, with ultimate results reached in 16 weeks. To sustain your enhanced eyelash growth, continue daily treatments; otherwise, your lashes will gradually return to their pre-treatment state. Check out the link below to learn more. Dr. Grant Stevens