![This sustainable toothbrush's bristles change color to tell you its time to replace the head! - Yanko Design This sustainable toothbrush's bristles change color to tell you its time to replace the head! - Yanko Design](https://www.yankodesign.com/images/design_news/2021/04/auto-draft/5-switch_yankodesign.jpg)
This sustainable toothbrush's bristles change color to tell you its time to replace the head! - Yanko Design
![This sustainable toothbrush's bristles change color to tell you its time to replace the head! - Yanko Design This sustainable toothbrush's bristles change color to tell you its time to replace the head! - Yanko Design](https://www.yankodesign.com/images/design_news/2021/04/auto-draft/7-switch_yankodesign.jpg)
This sustainable toothbrush's bristles change color to tell you its time to replace the head! - Yanko Design
![This sustainable toothbrush's bristles change color to tell you its time to replace the head! - Yanko Design This sustainable toothbrush's bristles change color to tell you its time to replace the head! - Yanko Design](https://www.yankodesign.com/images/design_news/2021/04/auto-draft/8-switch_yankodesign.jpg)
This sustainable toothbrush's bristles change color to tell you its time to replace the head! - Yanko Design
![This sustainable toothbrush's bristles change color to tell you its time to replace the head! - Yanko Design This sustainable toothbrush's bristles change color to tell you its time to replace the head! - Yanko Design](https://www.yankodesign.com/images/design_news/2021/04/auto-draft/6-switch_yankodesign.jpg)