DiamondSmile teeth whitening products specifically lighten enamel stains and protect teeth from future discoloration. The 6 most common causes of unsightly tooth discoloration can be treated by DiamondSmile professional teeth whitening products. Dark colored pigments and dyes are thus removed effectively and painlessly.DiamondSmile teeth whitening products specifically lighten enamel stains and protect teeth from future discoloration. The 6 most common causes of unsightly tooth discoloration can be treated by DiamondSmile professional teeth whitening products. Dark colored pigments and dyes are thus removed effectively and painlessly.