Brush heads become less effective after 3 months of use, but with BrushSync you'll be reminded before this happens.
Your Philips Sonicare toothbrush will track the wear of your smart brush head. It is measured by:
• The overall pressure you apply while brushing
• The total time you have brushed with your brush head
Once your brush head is no longer effective or has become worn out, the Brush-Head Replacement reminder icon on the handle will blink amber. This indicates that you should change your brush head.
Note: the Brush-Head Replacement reminder only works with Smart Brush Heads.
You can purchase a replacement brush head by visiting the Philips Toothbrush Head replacement page