Grow your own thicker and longer eyelashes with Latisse. Latisse is a new prescription product that is becoming very popular with our patients. It is applied to the upper lashes at night. While your eyes are closed it is transferred to the lower lashes. The hair follicles in both the upper and lower lids are stimulated. Typically, 25% increase in length and 100% in density is seen after four months. The result is maintained by continued use.