How safe is artefill? i've heard that artefill can cause serious problems, including infection, even years after injection. is that right?

Artefill : Artefill can cause delayed problems. The most common is granulomas, a chronic inflammation that can lead to lumps and ulceration. Artefill contains bovine collagen (from cows) and small spheres of polymethyl methacrylate or pmma. Also known as plexiglass or lucite. It is an acrylic glass, a transparent thermoplastic, often used as a lightweight and shatter-resistant alternative to glass. The collagen is absorbed, the pmma is not. It causes a mild irritation that encourages the body to form its own collagen. For people it is too stimulating and a granuloma can result. The artefill site has more information under the "what is artefill?" tab, with subtabs: "about artefill", "safety information" and "frequently asked questions". This cannot substitute for an in person consultation with an experienced physician injector.