Spinbrush PRO WHITEN Replacement Soft Brush Heads feature Dual-Action Technology — a combination of spinning and side-to-side brushing heads — for the ultimate in cleaning. The replacement heads have an innovative whitening bristle system to gently polish away surface stains as they clean and achieve whiter teeth in 1 week. The bristles are also designed like a cup to hold more paste. The brush heads feature green colour-wear bristles that fade when it's time to change the head. Power up today for a cleaner, fresher and more radiant smile than ever before with Spinbrush.