Single phase whitening dentifrice with high purity metaphosphate abrasive
Provided is a single phase oral care composition having a whitening agent; a first abrasive selected from calcium pyrophosphate, calcium carbonate, and dicalcium phosphate; a second abrasive that may include sodium metaphosphate; an anticalculus agent; and a substantially anhydrous carrier that may include an ethylene oxide/propylene oxide copolymer. In the composition, a wt % of the second abrasive is equal to or greater than a wt % of the first abrasive.
1. A single phase oral care composition, comprising:
a whitening agent;
a first abrasive comprising sodium metaphosphate;
a second abrasive;
an anticalculus agent; and
a substantially anhydrous carrier comprising an ethylene oxide/propylene oxide copolymer,
wherein a wt % of the second abrasive is equal to or greater than wt % of the first abrasive and wherein the whitening agent is potassium persulfate (potassium peroxymonosulfate).
2. The composition of claim 1 , wherein the second abrasive is not calcium pyrophosphate.
3. The composition of claim 1 , wherein the anticalculus agent comprises an agent selected from: a polyphosphate; a hexametaphosphate salt; a polyolefin sulfonate; and a combination of two or more thereof.
4. The composition of claim 1 , wherein the carrier has a total water content of less than about 4%, by weight.
5. The composition of claim 1 , wherein the composition is a dentifrice.
6. The composition of claim 1 , wherein the composition further comprises sodium lauryl sulfate and a fluoride source.
7. A single phase oral care composition, comprising:
a whitening agent;
a first abrasive comprising sodium metaphosphate;
fumed silica;
an anticalculus agent; and
a substantially anhydrous carrier comprising an ethylene oxide/propylene oxide copolymer,
wherein a wt % of the fumed silica is less than wt % of the first abrasive and wherein the whitening agent is potassium persulfate (potassium peroxymonosulfate).
8. The composition of claim 7 , wherein the anticalculus agent comprises an agent selected from: a polyphosphate; a hexametaphosphate salt; a polyolefin sulfonate; and a combination of two or more thereof.
9. The composition of claim 7 , wherein the carrier has a total water content of less than about 4%, by weight.
10. The composition of claim 7 , wherein the composition is a dentifrice.
11. The composition of claim 7 , wherein the composition further comprises sodium lauryl sulfate and a fluoride source.