A synthetic form of the naturally occurring substance prostaglandin, Latisse is an excellent and well-founded product. The active ingredient is bimatoprost. It is renowned for its use in treatment of hypotrichosis, wherein normal eyelash growth fails to occur. By applying a small drop of Latisse to a small brush and swiping it across your upper eyelid daily, it causes upper eyelashes to be longer, thicker, and significantly more full. Many people have had excellent results with this. Keep in mind that side effects are by no means permanent and that normal growth resumes upon termination of application. Take care to avoid dropping in your eye or using with herbal products.