“The first blade is clean, the second is even cleaner.”

Mathematician: Either the first blade is NOT clean, or the second blade is not needed. Why shave what is clean?

Physicist: You are wrong. “Cleaning” means shaving more than 99% of the hair. After the first blade, part of the hair will remain, and after the third, all the hair will be cut.

Marketing: You are both wrong.

History: 15th century - in Damascus create self-propelled blades. 20th century - in the West create self-dampening machines.

The Marketing: It is! We created a shave that stops working after the first shave. To do this, the technicians placed the blades at a distance in the thickness of the hair. The gap is clogged with cut hair and it becomes impossible to shave. How to explain this to buyers? This is why we came up with the slogan of “clean, even cleaner.”