Only compatible with Duo Pro and not compatible with Duo
Enhanced Whitening - Whitening effectiveness is boosted by 20% through the use of firmer bristles for the surface enamel, while the outer bristles continue to provide a gentle touch on the gums.
Improved Plaque Removal - ProFlex brush heads offer 40% improved plaque removal when compared to standard brush heads
ProFlex Brush Heads - AquaSonic's improved ProFlex Brush heads offer improved plaque removal with precisely angled bristles with alternating hard and soft areas that are gentler on gums and slightly harder on teeth