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US 9,173,826 B2Granted
Porous, dissolvable solid substrate and surface resident coating comprising a zync pyrithione
AssigneeThe Procter & Gamble Company
InventorsJames Robert Schwartz, Robert Wayne Glenn, Jr.
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Abstract
The present invention relates to personal care compositions, especially those shave preparation article and skin care articles which are in the form of a porous dissolvable solid substrate having a surface resident coating comprising at least one skin treatment active. The present invention can deliver a consumer benefit as well as allow for separation of any incompatible actives in the substrate versus the coating.
Claims19
A personal care article comprising:
- a.) a first porous dissolvable solid substrate comprising:
- i. from about 10% to about 75%, by weight of the first porous dissolvable solid substrate, of at least one surfactant;
- ii. from about 10% to about 50%, by weight of the first porous dissolvable solid substrate, of a water-soluble polymer;
- iii. from about 1% to about 30%, by weight of the first porous dissolvable solid substrate, of a plasticizer;
- and
- b.) a surface resident coating comprising from about 1% to about 70%, by weight of the personal care article, of at least one coating skin treatment active at least partially coating said first porous dissolvable solid substrate,
- wherein the ratio of the porous dissolvable solid substrate to the surface resident coating is from about 110:1 to about 0.1:1;
- and
- wherein said coating skin treatment active comprises zinc pyrithione.
6 more elements
A personal care article comprising:
- a.) a first porous dissolvable solid substrate comprising:
- iv. from about 10% to about 75%, by weight of the first porous dissolvable solid substrate, of at least one surfactant;
- v. from about 10% to about 50%, by weight of the first porous dissolvable solid substrate, of a water-soluble polymer;
- vi. from about 1% to about 30%, by weight of the first porous dissolvable solid substrate, of a plasticizer;
- vii. from about 0.05% to about 2%, by weight of zinc pyrithione;
- viii. optionally from about 0.05% to about 5% by weight of at least one of a metal oxide, metal hydroxide, metal carbonate, metal bicarbonate, and mixtures thereof;
- and
- b.) optionally, a surface resident coating comprising from about 1% to about 70%, by weight of the personal care article, of at least one coating skin treatment active at least partially coating said first porous dissolvable solid substrate, wherein the ratio of the porous dissolvable solid substrate to the surface resident coating is from about 110:1 to about 0.1:1.
5 more elements
Dependencies are inferred from the claim text.