*. Exceptionally gentle."
*Tested on 3-days beards versus leading premium products.
11 studies in total were carried out to substantiate the claims of "World’s most efficient shaver.
* Exceptionally gentle." as well as "World’s most efficient shave.
* Exceptionally gentle." with the asterisk “
*tested on 3-days beards versus leading premium products”.
In studies 1 to 5, the shaving efficiency of the Braun Series 9 compared to 5 different competitor shavers on 3-days beards was objectively determined using an optical measurement procedure.
In studies 6 to 11, the ipi Instituts for Product-Market-Research in Stuttgart tested the Braun Series 9 electric shaver in comparison with 6 different competitor shavers from the premium segment, and they were subjectively assessed by consumers. "Shaving Efficiency" relates to how much hair the shaver removes per stroke/time unit. A consumer is also able to see this at