These Oral-B Pure Clean Charcoal Electric Toothbrush Replacement Heads are designed for a superior clean, featuring charcoal-infused bristles. Charcoal particles help naturally lift impurities and polish the tooth surface, promoting whitened teeth and a healthier smile. The specific bristle design ensures comprehensive coverage, reaching deep between teeth for effective plaque removal. Ideal for daily use, these refill heads maintain the high-performance cleaning standard associated with Oral-B electric toothbrushes.