2 Replacement Heads With Special Whitening Bristles The Crest SpinBrush Pro Whitening brush is a battery toothbrush with an innovative whitening bristles system. With regular brushing, it's designed to clean your teeth, and give you a whiter smile. Dual Action Brush Head for double the cleaning motion Whitening Bristle Combination designed to give you whiter teeth Thin Head designed to clean difficult to reach teeth Brush Head is Replaceable Questions? 1-800-561-0752 or visit spinbrush.com.