You may have heard of the BOTOX "Lip Flip", a quick and simple treatment in which BOTOX is used to enhance the upper lip to get a youthful, sensual appearance. A less expensive alternative to lip enhancement than dermal fillers or surgery, the BOTOX Lip Flip uses a few units of BOTOX to relax the muscles there and turn the lip upward. Besides achieving a very natural-looking, slightly enhanced lip appearance, the BOTOX Lip Flip is also great for preventing fine lines around the upper lip.