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“Hourglass toothpaste” is designed for people who always ignore the truth how long should be taken to brushing teeth. We design a new style of toothpaste lid, a hourglass that is minutes countdown is added onto it. So it will help people know how long they have taken to brush teeth. Scientists have proved that 3 minutes are best time for brushing teeth. It is harmful for the health of people’s teeth if they don’t take enough time to brush them. This production will help people develop a good habit to keep their teeth healthy.
Hubei University of Technology
Wuhan, China
Qiang Zhang,
Hubei University of Technology
Mengjun Li