Hello, and thank you for your question regarding the side effects of silicone injections, particularly in the nasolabial folds. This is a very important topic, as many patients are unaware of the risks associated with injectable silicone used as a filler. First and foremost, injectable silicone is not FDA-approved for cosmetic use in areas like the nasolabial folds, lips, buttocks, or face. While silicone is FDA-approved in certain medical-grade implants (like breast or testicular implants), free silicone injections are considered permanent and potentially dangerous, especially when injected improperly or in non-medical settings. How Long Does Swelling Last After Silicone Injections? Swelling from silicone injections can last anywhere from a few days to several weeks, depending on the amount injected, the depth of the injection, and the body’s reaction to the material. However, since silicone is a permanent filler, the tissue may remain chronically inflamed or irritated, causing recurrent swelling months or even years later. Side Effects of Silicone Injections (Especially in the Face): Chronic Swelling or Inflammation – Your body may treat silicone as a foreign substance, leading to prolonged swelling, redness, and tenderness. Granuloma Formation – This is one of the most common complications. Granulomas are hard lumps that form around the silicone as the body attempts to wall it off. Migration – Unlike temporary fillers, silicone can migrate from the injection site and settle in surrounding tissue, leading to asymmetry or distortion. Infection or Skin Breakdown – Because silicone is not absorbed by the body, it can create an environment where infection is more likely and harder to treat. Permanent Disfigurement – Over time, silicone may harden or distort the treated area, creating an unnatural or sunken appearance that may worsen with aging or weight loss. Difficult Removal – Once silicone is injected, removing it is extremely difficult. Most removals require an open excision or serial debridement, which can result in scarring. How Long Do These Side Effects Last? Unfortunately, many of these side effects can be long-term or even permanent without proper treatment. Some patients develop complications years after the initial injection. If you’re currently experiencing swelling or other issues after silicone injections, it’s important to seek help from a board-certified plastic surgeon with experience in silicone removal. Treatment may involve medications (like steroids or anti-inflammatory drugs), imaging studies to locate the silicone, or surgical removal, depending on the severity of symptoms. Thank you again for raising such an important question. If you are considering treatment or removal, please consult with a specialist who is familiar with managing silicone injection complications. Sincerely, Dr. J. Timothy Katzen, MD, MBA, FASMBS, FICS (Certified by the American Board of Plastic Surgery and President of the American Board of Bariatric Plastic Surgeons)