Colgate ProClinical 360 Whitening Refill Brush Heads, Pack of 4. Spiral bristles help to remove surface stains. Soft rubber cup polishes your teeth. This pack of refill brush heads fits any Colgate ProClinical toothbrush. Whitens teeth in one week and contains spiral bristles that help remove surface stains. Specially designed soft bristles to be gentle on your gums and minimise damage to the soft tissue. Get your teeth polished while you brush with the rubber cup between the bristles that polishes your teeth. The tongue and cheek cleaner helps to remove odour causing bacteria leaving you with a fresh feeling mouth.