Lavilin's deodorant effectiveness has been documented in several studies. One such study was conducted by doctors at the Heller Institute for Medical Research at Tel Aviv's Tel Hashomer Hospital. Another was conducted by an independent medical research laboratory (La Rocca) in the United States. Over a period of 15 days, 100 people used Lavilin deodorant and were tested under different climatic conditions - hot and humid, and hot and dry. A single effective application worked for 4-15 days. Aditionally, irritation test results show that Lavilin deodorant did not cause any skin irritation in any of the subjects tested.