lip-plumpers.jpg After one and half year, when the lip plumper’s made their debut into mainstream stores, they have become choice pick, among young women seeking an alternative to expensive collagen injections. But many dermatologists caution that the products could cause an allergic reactions in lips. The lips could swell to more than the desirable size, crack or even spread inflammation, they say. Some volumizers are made with spicy ingredients like cinnamon, ginger and clove, mixed with soothing lotions like avocado oil or green tea. Currently, about 50 lip plumpers are sold in the United States. Dr. Paul Cohen, a dermatologist in Toronto, felt that Lip Plumpers are harmless overall, despite they causing allergic reactions.