Colgate Enamel Renewal with Whitening repairs enamel by reversing micro-damage*, all while whitening teeth. This daily teeth whitening toothpaste restores tooth brightness by removing surface stains, so your smile is renewed and glowing again. Plus, Colgate Enamel Renewal whitening toothpaste strengthens enamel and is enamel-safe for daily use. Colgate Enamel Renewal is an enamel repair toothpaste. It builds protection from tooth sensitivity so that your smile is healthy and revitalized. Help fill weak spots* and repair enamel* with this 4X strengthening** enamel toothpaste.