"Electronic tweezers" are scams that have been around for decades but which can NEVER permanently remove hair. Hair is a very poor conductor of electricity, and current cannot travel down a hair shaft in anywhere near the level needed to kill the hair. To date, the only method of 100% permanent hair removal is electrolysis, which works on all hair colours and all skin shades. Laser hair removal can sometimes result in permanent hair reduction when used on dark, coarse hair but it will not work on fine, light hair and can sometimes make such hair worse. Please don't waste your money on electric tweezers.