Cationically-charged particulates and compositions containing the cationically-charged particulates for application to keratinous materials are provided. Methods of preparing the cationically-charged particulates are also disclosed. Methods of increasing the cationic charge on particulates are also provided.

An upconversion nanoparticle includes at least one host selected from LiYF.sub.4, NaY, NaYF.sub.4, NaGdF.sub.4, and CaF.sub.3, at least one sensitizer selected from Sm.sup.3+, Nd.sup.3+, Dy.sup.3+, Ho.sup.3+, and Yb.sup.3+ doped in the at least one host, and at least one activator selected from Er.sup.3+, Ho.sup.3+, Tm.sup.3+, and Eu.sup.3+ doped in the at least one host. The upconversion nanoparticle is designed using a calculation from first principles to absorb light in the near-infrared wavelength range whose stability is ensured. Further, a hyaluronic acid-upconversion nanoparticle conjugate, in which the upconversion nanoparticle as described above is bonded to hyaluronic acid, is provided to be used in various internal sites with a hyaluronic acid receptor, particularly enables targeting, and increases an internal retention period and biocompatibility thereof.

The present invention relates to topical compositions comprising at least one inorganic micropigment and a cetyl phosphate surfactant mixture consisting essentially of mono- and/or dicetyl esters of phosphoric acid or salts thereof and cetylalcohol and inorganic phosphate and heavy metals and water, characterized in that the surfactant mixture contains no organochlorine impurities and has an inorganic phosphate content of less than 0.7 wt.-% and a heavy metal content of less than 12 ppm.

A coated powder comprises (a) particles, and (b) a coating on the surface of the particles including (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties. The amount by weight in SiO.sub.2 equivalents of the organo oxysilane moieties and the silica moieties is at least 0.0625% of the total coated powder weight per m.sup.2/g of the specific surface area of the particle to be coated.

A coated powder comprises (a) nanoparticles, and (b) a coating, on the surface of the nanoparticles. The coating comprises (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties.

This disclosure provides bioceramic compositions of multiparticulate crystalline multimetallic silicates having silica double tetrahedra structures, such as Strontium-akermanite (Sr.sub.2MgSi.sub.2O.sub.7), Akermanite (Ca.sub.2MgSi.sub.2O.sub.7), Baghdadite (Ca.sub.3ZrSi.sub.2O.sub.9), Hardystonite (Ca.sub.2ZnSi.sub.2O.sub.7), as sources for controlled release of multiple metallic ions, such as Ca.sup.2+, Mg.sup.2+, Zr.sup.4+, Sr.sup.2+, Zn.sup.2+ for medical and dental use. This disclosure also includes medical and dental uses of the disclosed compositions, for example, in tissue regeneration, including bone tissue.

A coated powder comprises (a) particles, and (b) a coating on the surface of the particles including (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties. The amount by weight in SiO.sub.2 equivalents of the organo oxysilane moieties and the silica moieties is at least 0.0625% of the total coated powder weight per m.sup.2/g of the specific surface area of the particle to be coated.

Disclosed is a personal care composition comprising (a) particle comprising chitosan salt at the outer surface of the particle; and (b) functionalized non-volatile silicone, wherein the amount of the functionalized non-volatile silicone is greater than 20% by weight of the total non-volatile silicone.

A coated powder comprises (a) nanoparticles, and (b) a coating, on the surface of the nanoparticles. The coating comprises (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties.

The present disclosure relates to methods for protecting skin from UV radiation while simultaneously improving the appearance of skin. The methods include layered application of a skin perfecting composition and a sunscreen composition. The skin perfecting composition comprises: (i) about 1 to about 40 wt. % of at least one primary film forming polymer having a Young's modulus of 0.1 to 50 MPa, and elongation at break >50% and a glass transition temperature of <0 C.; (ii) about 1 to about 35 wt. % of at least one pressure sensitive adhesive polymer; (iii) about 1 to about 35 wt. % of soft focus powder; and (iv) water. The sunscreen composition comprises: (i) at least one organic UV filter; and (ii) a cosmetically acceptable carrier.