Colgate Smart Electronic toothbrush heads are easy to replace.
To change the brush head:
- Unlock the toothbrush head by turning it counter clockwise until the two indicators are aligned;
- Pull the toothbrush head up to remove it from the handle.
- Replace it with a new toothbrush head, ensuring that the indicators are aligned.
- Turn the toothbrush head clockwise until it is locked into place.