Like all authentic Philips Sonicare branded brush heads, this brush head is safe on teeth and gums. Each brush head has been quality tested for exceptional performance and durability.
At first glance it may not be obvious, but brush heads lose stiffness and gradually wear down over months of normal use. The blue reminder bristles fade to white and help you recognize when it's time for a replacement. For optimal results, replace your brush head every three months.