Whitening composition useful for the preparation of cosmetic formulations
AssigneeSensient Cosmetic Technologies
InventorsPaola Andrea SANCHEZ CELY, Tara MARTIN, Patricia VESQUE, Pamela EKLOU, Sophie HONG
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Abstract
Disclosed is a whitening composition including a mixture of zinc oxide and of boron nitride and, if appropriate, a whitening agent selected from kaolin optionally calcined, cerium oxide, a citrate salt, mica and a mixture thereof. The whitening composition is useful for imparting opacifying, whitening and/or covering properties to a cosmetic formulation, as a replacement for titanium dioxide.
Claims20
A method for preparing a cosmetic formulation, comprising adding to the cosmetic formulation a whitening composition, said whitening composition comprising:
- from 0 to 30% by weight of a whitening agent selected from kaolin optionally calcined, cerium oxide, a citrate salt, mica and a mixture thereof,
- from 70 to 100% by weight of a mixture of zinc oxide and of boron nitride, the proportions being with respect to the cumulative weight of whitening agent, of zinc oxide and of boron nitride,
- wherein the ratio of the weight of zinc oxide to the weight of boron nitride is 0.9 to 5.0, the whitening composition being free of titanium dioxide.
A whitening composition comprising:
- from 1 to 30% by weight of a whitening agent chosen from kaolin optionally calcined, cerium oxide and a mixture thereof,
- from 70 to 99% by weight of a mixture of zinc oxide and of boron nitride, the proportions being with respect to the cumulative weight of whitening agent, of zinc oxide and of boron nitride,
- wherein the ratio of the weight of zinc oxide to the weight of boron nitride is from 0.9 to 3.0, the whitening composition being free of titanium dioxide.
Dependencies are inferred from the claim text.