Abstract: Oral care compositions, such as whitening dentifrice compositions, whitening toothpaste compositions, and/or toothpaste compositions, include dicarboxylic acid, the dicarboxylic acid including malonic acid, methylmalonic acid, dimethylmalonic acid, dihydroxymalonic acid, salts thereof, or combinations thereof, where the composition has a ChemPC ?L of least about 7. Mouth rinse compositions include dicarboxylic acid, the dicarboxylic acid including malonic acid, methylmalonic acid, dimethylmalonic acid, dihydroxymalonic acid, salts thereof, or combinations thereof and at least about 75%, by weight of the composition, of water, where the composition has a ChemPC ?L of least about 7. The composition may be essentially free of, substantially free of, or free of polyphosphate.

Abstract: Oral care compositions, such as whitening dentifrice compositions, whitening toothpaste compositions, and/or toothpaste compositions, include dicarboxylic acid, the dicarboxylic acid including malonic acid, methylmalonic acid, tartronic acid, malic acid, dimethylmalonic acid, mesoxalic acid, dihydroxymalonic acid, oxalic acid, salts thereof, or combinations thereof; and a pH of from about 4 to about 6, where the composition has a ChemPC ?L of least about 7. Mouth rinse compositions include dicarboxylic acid, the dicarboxylic acid including malonic acid, methylmalonic acid, tartronic acid, malic acid, dimethylmalonic acid, mesoxalic acid, dihydroxymalonic acid, oxalic acid, salts thereof, or combinations thereof; a pH of from about 4 to about 6, and at least about 75%, by weight of the composition, of water, where the composition has a ChemPC ?L of least about 7.

Abstract: Oral care compositions comprising oxalic acid and less than 1%, by weight of the oral care composition, of cellulose derivative. Oral care compositions comprising oxalic acid and less than 1%, by weight of the oral care composition, of carboxymethylcellulose. Oral care compositions comprising oxalic acid and free of carboxymethylcellulose.

Abstract: Oral care compositions comprising oxalic acid and pH buffering agent with a pKa of from about 4 to about 6.5. Oral care compositions comprising oxalic acid and a pH buffering agent, such as adipic acid, glutaric acid, succinic acid, malonic acid, glutamic acid, ascorbic acid, citric acid, salts thereof, or combinations thereof.

Abstract: Oral care compositions including dicarboxylic acid and tin. Oral care kits including a first oral care composition with tin and a second oral care composition with dicarboxylic acid. Oral care compositions including tin and dicarboxylic acid that provide an enhanced antierosion benefit, a stain prevention benefit, and/or a stain removal benefit.

Abstract: Oral care compositions including dicarboxylic acid and fluoride. Oral care kits including a first oral care composition with fluoride and a second oral care composition with dicarboxylic acid. Oral care compositions including fluoride and dicarboxylic acid that provide an enhanced anticaries benefit, a stain prevention benefit, and/or a stain removal benefit.

Abstract: Oral care compositions including tin, monodentate ligand, and polydentate ligand with an optimized molar ratio of tin to monodentate ligand to polydentate ligand. Oral care compositions with a tin to monodentate ligand to polydentate molar ratio of from about 1:0.5:0.5 to about 1:5:5. Oral care compositions including tin, monocarboxylic acid, and tricarboxylic acid.

Abstract: Remineralizing oral care compositions with tin, silica, chelant, a pH of about 6 or greater, but free of zinc. Remineralizing oral care compositions with tin, silica, monodentate ligand, polydentate ligand, a pH of about 6 or greater, but free of zinc. Remineralizing dentifrice compositions with tin, silica, and a chelant system, but free of zinc.

Abstract: Oral care compositions including dicarboxylic acid and a pH of from about 4 to about 6. Oral care kits including a first oral care composition with fluoride and a second oral care composition with dicarboxylic acid. Oral care compositions including fluoride and dicarboxylic acid that provide an erosion benefit, a stain prevention benefit, and/or a stain removal benefit.

Abstract: Dentifrice compositions including tin, monodentate ligand, polydentate ligand with low RDA values. Dentifrice compositions with a unique ratio of monodentate ligand to polydentate ligand to stabilize tin. Oral care compositions including tin with unexpectedly low stain at lower RDA values. Dentifrice compositions including tin and silica with an unexpectedly low stain and RDA value.

Abstract: An oral care regimen where a user applies a first oral composition and a second composition to the oral cavity. The first composition can be a dentifrice and can contain stannous fluoride and the second composition can be a gel and can contain hydrogen peroxide. The regimen can provide a long-lasting clean feeling.

Abstract: An oral care regimen where a user applies a first oral composition and a second composition to the oral cavity. The first composition can be a dentifrice and can contain stannous fluoride and the second composition can be a gel and can contain hydrogen peroxide. The regimen can provide a long-lasting clean feeling.