A Comparative, Open-Label, Randomized Study Evaluating Efficacy of a Hand-Held Device Using a Combination of Vibration and Cold Versus Only Vibration in Reducing the Pain Sensation of Multiple Local Anesthesia Injections During Hair Transplant
January 2026
New to Hair Transplant? There is a guide in the encyclopedia. Read the guide → Studysummary This study found that the Leni wand device, which combines cold and vibration, was more effective at reducing pain from local anesthesia injections during hair transplant surgery than a device using only vibration, although results were obtained solely from a male participant group.
Our plain-language summary. Not medical advice or a treatment recommendation. Consult a qualified healthcare professional before changing treatment. Full disclaimer
The study evaluated the effectiveness of a hand-held device, the Leniwand, which combines vibration and cold, in reducing pain from local anesthesia injections during hair transplant surgery, compared to a device using only vibration. Conducted on 30 male patients aged 27-51, the study found that the combination of cold and vibration significantly reduced pain for 17 participants, while 7 experienced some reduction, 5 noticed no difference, and 1 reported increased pain. The study concluded that the Leniwand is more effective in pain reduction than vibration alone, though it was limited by the selection of only male participants.
