The lip enhancer works by using self-suction to enhance your lip line and give added fullness. There may be somewhat of a "learning" curve in achieving the best look for your lips using Lip Plumping Enhancer. With use, you will be able to move the enhancer around for better placement to add fullness to specific areas and understand what works best for you. Wetting the area around the mouth helps get the best suction. Position the enhancer over the mouth area and begin to gently suck in, creating a firm suction. Gently continue until you feel your lips and the area around your lips pull into the Lip Plumping Enhancer. Do not over do the suction when using your fullips enhancer. Start slowly, sucking gently and creating a suction, release the suction after about 10-15 seconds.