Structures and compositions increasing the stability of peroxide actives
A peroxide product is provided. The peroxide product includes a package having a headspace, a substrate disposed within the package, and a thin layer of a composition having a peroxide active and a polyol, wherein the thin layer is disposed adjacent the substrate. The peroxide product also includes at least one means for increasing the stability of the peroxide active of the composition. The thin layer of the composition has at least about 43% of its original concentration of the peroxide active at twelve months after manufacture when stored at about 25° C. and in the absence of light.
1. A packaged tooth whitening product, comprising:
a package;
a substrate disposed within said package having a first section and a second section that is separable from said first section;
a tooth whitening composition comprising a peroxide active, said tooth whitening composition having a first section disposed adjacent said first section of said substrate and a second section disposed adjacent said second section of said substrate; and
wherein said first sections of said substrate and said tooth whitening composition can be applied to a user's teeth without said second sections of said substrate and said tooth whitening composition.
2. The packaged tooth whitening product of claim 1 , wherein said tooth whitening composition is formed into a layer and the ratio of the exposed surface area of said layer to the volume of said thin layer is between about 0.05 mm −1 and about 0.15 mm −1 .
3. The packaged tooth whitening product of claim 1 , wherein said tooth whitening composition is formed into a layer and the ratio of the exposed surface area of said layer to the volume of said thin layer is between about 0.05 mm −1 and about 0.1 mm −1 .
4. The packaged tooth whitening product of claim 2 , wherein said layer has a thickness between about 0.05 mm and about 1 mm.
5. The packaged tooth whitening product of claim 1 , wherein said first and second sections of said substrate are separated by a slit.
6. The packaged tooth whitening product of claim 5 , wherein said slit is u-shaped in top plan view.
7. The packaged tooth whitening product of claim 1 , wherein said first and second sections are separated by a partible separation.
8. The packaged tooth whitening product of claim 1 , wherein said tooth whitening composition further comprises a polyol.
9. The packaged tooth whitening product of claim 8 , wherein the concentration of said polyol is less than about 40% of said tooth whitening composition by weight.
10. The packaged tooth whitening product of claim 1 , wherein said tooth whitening composition further comprises water.
11. The packaged tooth whitening product of claim 2 , wherein the ratio of the unexposed surface area of said layer to the volume of said layer is less than about 105 cm −1 .
12. The packaged tooth whitening product of claim 1 , wherein a material forming at least a portion of a surface of said substrate that is in contact with said tooth whitening composition is a polyolefin.
13. The packaged tooth whitening product of claim 12 , wherein said material is selected from the group consisting of polyethylene, polypropylene, and combinations thereof.
14. The packaged tooth whitening product of claim 1 , wherein said substate is flat within said package.
15. The packaged tooth whitening product of claim 1 , wherein said first and second sections of said tooth whitening composition are integral.
16. A packaged tooth whitening product, comprising:
a package;
a substrate disposed within said package having a first section and a second section that is separable from said first section;
a layer of a tooth whitening composition comprising a peroxide active disposed adjacent said substrate, wherein said layer has a thickness between about 0.05 mm and about 1 mm and wherein said layer has a first section disposed adjacent said first section of said substrate and a second section disposed adjacent said second section of said substrate; and
wherein said first sections of said substrate and said tooth whitening composition can be applied to a user's teeth without said second sections of said substrate and said tooth whitening composition, and wherein the ratio of the exposed surface area of said layer to the volume of said layer is between about 0.05 mm −1 and about 0.15 mm −1 .
17. The packaged tooth whitening product of claim 16 , wherein said first and second sections of said substrate are separated by a slit that is u-shaped in top plan view.
18. The packaged tooth whitening product of claim 16 , wherein said tooth whitening composition further comprises a polyol, wherein the concentration of said polyol is less than about 40% of said tooth whitening composition by weight.
19. The packaged tooth whitening product of claim 16 , wherein said tooth whitening composition further comprises water.
20. The packaged tooth whitening product of claim 16 , wherein a material forming at least a portion of a surface of said substrate that is in contact with said tooth whitening composition is a polyolefin.