Latisse™ eyelash extension treatment is the first and only product approved by the FDA that has been scientifically proven to stimulate the growth of eyelashes. Developed by Allergan, Latisse™ is a topical prescription that can help patients to grow longer, thicker and more alluring lashes. The solution is applied daily to the base of the upper eyelashes over a period of about 4 to 8 weeks. Once results are noticeable and you have achieved the desired eyelash length and thickness, treatments can be reduced. However, regular applications of Latisse™ are necessary to maintain results.