The TrueLife SONICBRUSH COMPACT HEADS WHITEN is a replacement head for a sonic toothbrush with a high frequency of 35 000 movements a minute. Dental plaque, pigment stains, an bacteria don't stand a chance against these gentle vibrations. Sonic technology is much more gentle on the dental enamel than the rotary brushes. The Whiten replacement head is developed specifically for teeth whitening. In the package you will find 2 replacement heads for the TrueLife SonicBrush Compact sonic toothbrush in the Whiten version.