Bellafill uses an innovative blend of two distinct components to create results that are both immediate and long lasting. Suspended within its smooth collagen gel base are tiny polymethyl methacrylate (PMMA) microspheres. Once it’s injected, the collagen goes to work immediately, adding natural-looking volume to soften smile lines or acne scars. Over time, your body naturally metabolizes the collagen-but that doesn’t mean your results disappear. The PMMA microspheres work as a scaffolding system, supporting the development of your own collagen and laying the foundation for long-term smoothness.