Lip plumper is a cosmetic product designed to enhance the appearance of the lips by making them look fuller and more voluminous. These products come in various forms, including glosses, balms, and serums, and often contain ingredients that create a temporary plumping effect. Lip plumpers typically use a combination of ingredients that stimulate blood flow, hydrate the lips, or cause mild irritation. Common mechanisms include: Vasodilation: Some ingredients may temporarily increase blood flow to the lips, making them appear fuller and more vibrant. Hydration: Many lip plumpers contain moisturizing agents that can make the lips look smoother and plumper. Irritation: Certain active ingredients cause a tingling or slightly irritating sensation, which can enhance the perception of fullness.