
How Should Brands Specify a Facial EMS Device?
How Should Brands Specify a Facial EMS Device? A facial EMS sample can feel convincing while its quotation says little more than ‘five levels’ and ‘lifting mode.’ That is a purchasing problem: a feature list cannot tell a brand what electrical output the factory must reproduce, under which conditions, or how a production lot will be released. A change in firmware, contact geometry or battery behavior can make a later








