research A comparative, open-label, randomised 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 anaesthesia injections during hair transplant
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.