what is lip filler made out of

Lip fillers are injections that add volume to the lips and are a type of dermal filler. The most common type of lip filler is hyaluronic acid, which is a natural substance found in the body that helps keep the skin hydrated. Other types of filler materials can include collagen, which is derived from animal tissue, or synthetic materials like polymethylmethacrylate (PMMA) . When injected into the lips, the filler material plumps them up and makes them look fuller. The results typically last for about six months, after which the filler is naturally absorbed by the body. Lip fillers are generally considered safe, but like any medical procedure, they do carry some risks.