Botulinum Toxin in the Oily Skin: Advantage of a Multi-Needle Device for a Controlled Release

Background: Oily skin is one of the most common dermatological complaints. With the obligation to use masks to protect themselves from the Covid-19 virus, the problem has become even more evident. One of the treatments proposed is the use of onabotulinumtoxin-A injected sub-dermally. For an optimal result, the injectioni must be done on the whole area with numerous micro-injections located only in the sub-dermis. The procedure is often poorly tolerated by patients and sometimes accompanied by hematomas and bruises. This research aimed to test a disposable device to inject botulin toxin at 1.5 mm under the skin with a painless procedure and homogeneous distribution of the toxin. Methods: We treated patients with oily skin with the injection of 100 IU of Onabotulinumtoxin-A (diluted in 5 ml of a saline solution). All the patients were evaluated after 2 weeks, one month, and three months. Results: In 10 patients, after 15 days we observed a real improvement of the quality of the skin; for two, the results were present at the 1 month follow up. In all cases, the treatment appeared homogeneous in the entire face. All the patients considered the procedure virtually painless or with minimal discomfort. Conclusion: In accordance with other authors, we confirm the real advantages of micro-botulinum toxin for oily skin. Moreover, the use of this simple and innovative device allows a homogeneous distribution of the drug in the correct plane, without pain, and reduces the risks of common complications.