Achieve a healthy balance & boost happiness with Oral-B's Indicator Color Collection brush. Its indicator bristles fade away to let you know when it's time to replace!
Oral-b Indicator Soft Toothbrush - 6ct : Target
Amazon.com : Oral-B Indicator Toothbrush Flat Trim, 35 Soft - Pack of 6 : Health & Household
Amazon.com : Oral-b Indicator Sensitive Toothbrush, 35 Extra Soft (Colors Vary) - Pack of 6 : Health & Household