The present application relates to a colouring solid particle for dyeing keratin fibres, in particular human keratin fibres such as the hair, comprising a core containing one or more direct dyes and/or one or more oxidation dye precursors and an upper coating layer covering said core and containing one or more cellulose ethers. The present application also relates to a process for preparing a dye composition comprising one or more colouring solid particles, to a process for the oxidation dyeing of keratin fibres, comprising the application of the composition obtained to said fibres, and to the use of this composition for dyeing keratin fibres.

The present patent application relates to a process for preparing a composition for dyeing keratin fibres, in particular human keratin fibres such as the hair, comprising a step of mixing several identical or different solid particles comprising one or more dyes, preferably one or more oxidation dye precursors, with an oxidizing aqueous composition, followed by a step of adding an alkaline aqueous composition preferably comprising arginine. The present patent application also relates to a dyeing process using the composition obtained.

The present invention relates to a composition comprising: (a) at least one particle comprising at least one cationic polymer and at least one anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, and at least one non-polymeric acid having two or more pKa values or salt(s) thereof or at least one non-polymeric base having two or more pKb values or salt(s) thereof; and (b) water, wherein the anionic polymer is selected from hyaluronic acid and derivatives thereof, and the amphoteric polymer is selected from cationized hyaluronic acid and salts thereof. The composition according to the present invention is stable, and can have a variety of cosmetic functions. The stickiness of the composition according to the present invention can be reduced.

Disclosed herein are compositions (e.g., sprays, paints, etc.) that comprise antimicrobial zeolite nanoparticles. Also provided are hemostatic compositions comprising zeolite nanoparticles, dryer sheets comprising zeolite nanoparticles, and textiles comprising zeolite nanoparticles. Also disclosed are compositions (e.g., sprays) that include a binder polymer to improve coating adherence. In some cases, the zeolite nanoparticles can further comprise an optical tracer (e.g., a fluorophore) associated with the zeolite nanoparticles. The optical tracer can be interrogated to confirm presence of the zeolite nanoparticles (or a coating comprising the zeolite nanoparticles) on a surface. Also provided are methods of forming viricidal coatings using compositions that comprise zeolite nanoparticles dispersed in a carrier.

To provide an oil-in-water type emulsified cosmetic comprising a pigment grade hydrophobically treated particle and a hydrophobically treated microparticle, which is capable of uniformly applying particles subjected to hydrophobization treatment on the surface of the skin and exhibiting a good tone-up effect and the like.

The oil-in-water type emulsified cosmetic of the present disclosure comprises a dispersion medium comprising water, and an oil droplet dispersed in the dispersion medium, wherein the dispersion medium comprises a nonionic surfactant, a polyhydric alcohol, and a pigment grade hydrophobically treated particle having an average particle diameter of 300 nm or more, wherein the oil droplet comprises an oil content , a nonionic surfactant, and a hydrophobically treated microparticle having an average particle diameter of 200 nm or less, and wherein the oil content comprises a volatile oil.

A method for processing a high pigment loaded cosmetic composition may provide a pre-dispersion phase, a grind phase, and a full extender phase. The method of processing the cosmetic composition may fully saturate and disperse solid particulates of at least 35% by weight of the cosmetic composition. The method for processing the cosmetic composition may provide a high color payoff in a single swipe or application. Further, the method for processing the cosmetic composition may reduce feathering and bleeding even with a high pigment load.

Anhydrous cosmetic compositions that provide improved dispersion of pigments and fillers, and solids spreading, as well as providing a matte color or mattifying effect. The anhydrous cosmetic compositions comprise a polyhydroxyalkanoate; a polysiloxane elastomer; and a filler, a pigment, or both.

The present invention relates to a process for dyeing keratin fibres, in particular the hair, which consists in applying to the keratin fibres: at least one coat of at least a first composition (i) comprising at least one hydrophobic film-forming polymer, at least one volatile solvent and at least one pigment, and then, after drying, at least a second coat of at least a second composition (ii) comprising at least one hydrophobic film-forming polymer, at least one volatile solvent and at least one pigment, the pigments of compositions (i) and (ii) being qualitatively and/or quantitatively different.

The present invention relates to coated metal oxide particles, to a process for preparing such coated particles by means of flame spray pyrolysis technology, to metal oxide particles derived from such a process, to the compositions comprising such particles and also to the uses thereof.

Aqueous mixtures can include cellulose nanocrystals and sulfonated polyester, where a glass transition temperature (T.sub.g) of the sulfonated polyester is greater than 25° C. In some instances, exemplary aqueous mixtures also include one or more additives, such as pigment. Exemplary aqueous mixtures can be applied as a film that is typically hydrophobic and resilient against water at room temperature. Upon application of warm water, such as at temperatures of from about 30° C. to about 60° C., the film can be removed with no or limited abrasion and/or with no or little removal oils.