Hello Corrine75, and thank you for your question about Silikon 1000 and its effects on your lips. Silikon 1000 is a permanent filler, meaning it is not metabolized or broken down by the body like temporary fillers such as hyaluronic acid. If you are not seeing a lasting difference after four rounds of injections, it is highly unlikely that your body is "removing" or "clearing" the silicone. Instead, the filler may be migrating from the injection site or becoming encapsulated by scar tissue, both of which can diminish the visible effects. When silicone is injected, the body may react to it as a foreign substance, creating fibrous scar tissue around the filler. This encapsulation can make the injected area feel firm or lumpy and reduce the overall aesthetic improvement. Additionally, migration—where the silicone shifts to adjacent areas—can also occur, especially in a highly mobile area like the lips. These complications are not uncommon and highlight the risks associated with permanent fillers like Silikon 1000. Adding more silicone to try to achieve better results can actually worsen the problem. Repeated injections increase the likelihood of excessive scar tissue formation, chronic inflammation, or visible deformities. If complications develop, the only way to address them is through surgical removal, which often requires excising part of the lips. This can result in permanent changes to the size, shape, or contour of the lips. If you metabolize fillers quickly and are seeking a more noticeable and reliable result, I would recommend avoiding additional silicone injections. Safer alternatives include hyaluronic acid (HA) fillers like Juvederm or Restylane, which can be adjusted or dissolved as needed. Another option to consider is fat grafting, where your own fat is used to add volume. While some of the fat may be reabsorbed over time, it offers a longer-lasting and natural solution without the risks associated with permanent fillers. I hope this helps clarify the situation and provide some guidance on next steps. Please consult with a board-certified plastic surgeon or dermatologist who specializes in filler complications to evaluate your options. Sincerely, J. Timothy Katzen, MD