The Quest to Design the Perfect Toothbrush

Eduardo Jiménez, director of technology at Colgate-Palmolive, carries buckets of toothbrushes to meetings. He studies the angle of bristles and their corresponding scrubbiness. He pores over data from focus groups about the width of the handle and the all-important gripping point where a user’s thumb and fingers hold the brush. Sometimes he brushes at his desk.

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