Get beautiful lashes and thicker looking brows with RapidLash. With RapidLash Eyelash Renewal System, you may never need mascara or eyebrow pencil again. If sparse eyelashes and eyebrows are giving away your age, you need RapidLash. What years, stress and the environment have taken away, RapidLash gives back with thicker-looking lashes and brows in just weeks.