Completely natural without needles or chemicals and safe to use. Due to the vacuum absorption of the lips, it can expand the capillaries of the lips and eventually achieve the effect of plumping the lips. 1-2 minutes is all it takes for results that last up to 4-6 hours or even longer with repeated use. There are three pressure settings on the Lip Plumper, ranging from low to high. You can increase the plumpness of your lips without any discomfort. You may also select the setting that best matches your lip plumping objectives while still providing optimal lip care.