Reminder / Bathroom

CONCEPT
continuous using the same toothbrush more than two month will Increase the risk of oral diseases .
Toothbrush’s normal life is two month , but most people didn’t record the frequency of there toothbrush's replacement , so they often use the same toothbrush more than two month .
by using color changing material , warning sentence will show of gradually in red within two month .conveys massage throw vision is the easiest way .