What good is brushing your teeth if your toothbrush isn’t in tip-top shape?! Dentists suggest replacing your brush every three months for you to effectively maintain your dental health. The “Three Months” brush takes the guess work out of remembering to do this. A circle on the hands is filled with a special ink that reacts to air after the protective film is removed. After 1 month, 1/3 of the circle turns blue, after two months, 2/3rs will turn blue. Finally, when 3 months have passed, you’ll be alerted by a complete blue circle, signaling that it’s time to replace! Designer: QiChong Wei