Oral Care Compositions

An aqueous abrasive oral care composition comprising (a) 1-10 wt. % hydrogen peroxide, (b) 5-20 wt. % of calcium pyrophosphate abrasive, (c) 35-75 wt. % propylene glycol, (d) 5-20 wt. % of a thickening system, the thickening system comprising from about 6 to about 16 wt. % of a polyvinylpyrrolidone and from about 2 to about 4 wt. % of a thickening silica, (e) 1-20 wt. % of a polyethylene glycol/polypropylene glycol random copolymer;

• provided that:
• (1) the hydrogen peroxide is incorporated into the composition as a 40-80% aqueous solution;
• or
• (2) the hydrogen peroxide is incorporated into the composition as a 30-80% aqueous solution and the composition is not formulated with metal ion chelating agents selected from metal stannate salts, colloidal stannate, EDTA, and salts thereof,
• wherein the oral care composition has a weight ratio of the polyvinylpyrrolidone to the silica thickeners of about 5:1 to about 1:1 and the oral care composition has a viscosity of about 50,000 to 250,000 cP at room temperature using Brookfield viscometer and a spindle no. 3 for 1 minute.