Patent ID: 11911636
Assignee: L'OREAL
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  B | IPC A  B

Claim 14:
15. A process for treating keratin fibers, the process comprising:
(i) mixing a packaging article with an aqueous composition comprising hydrogen peroxide to form a mixture having a pH ranging from 7 to 12,
wherein the packaging article comprises polyvinyl alcohol fibers and defines at least one cavity, and
wherein the at least one cavity comprises a substantially anhydrous composition comprising:
at least one chemical oxidizing agent chosen from sodium persulfates, potassium persulfates, ammonium persulfates, or mixtures of two or more thereof, wherein the total amount of chemical oxidizing agents ranges from 30% to 90% by weight, relative to the weight of the substantially anhydrous composition,
at least one alkaline agent chosen from magnesium carbonate, sodium silicate, sodium metasilicate, or mixtures of two or more thereof, wherein the total amount of alkaline agents ranges from 1% to 25% by weight, relative to the weight of the substantially anhydrous composition,
at least one anionic surfactant chosen from sodium lauryl ether sulfate, sodium lauryl sulfate, or a mixture thereof,
mineral oil,
sodium stearate, and
at least one thickening polymer chosen from guar gum,
wherein the composition comprises less than 0.5% water by weight, relative to the substantially anhydrous composition;

(ii) applying the mixture to the keratin fibers;
(iii) leaving the mixture on the keratin fibers for a leave-on time ranging from 1 minute to 1 hour; and
(iv) rinsing the keratin fibers.