Zinc oxide compositions and methods for controlling zinc oxide particle size for sunscreen applications are provided herein. An example composition includes multiple zinc oxide particles, wherein each of the zinc oxide particles is (i) coated with an optical coating material and (ii) of a size that is below a maximum threshold; and a medium layer within which the zinc oxide particles are suspended, wherein the medium layer comprises a mixture of one or more media, and wherein each of the media has a refractive index below a predetermined threshold.

The present invention relates to a process for producing perfume- or flavor-containing polyurea microcapsules with improved deposition of encapsulated actives on targeted surfaces such as fiber, hair and skin, which can be used in home or personal care products, as well as to microcapsules obtainable by such a process and consumer products comprising these microcapsules.

This invention is related to a method for producing polymer latex particle coated with silver nanoparticles. First, a polymer latex particle suspension is mixed with a silver nitrate solution in a weight ratio of 10:1 to 1:10 at 50 C. to 90 C. for 10 to 120 minutes to form a mixed solution. After the temperature of the mix solution is cooled to 50 C. to 85 C., a sodium citrate solution is added to react with the mixed solution for 10 to 240 minutes to form a polymer latex particle coated with silver nanoparticles, which has antibacterial activity.

Silica materials having high cleaning and low abrasion properties are described, together with methods of making such materials and dentifrice compositions comprising the silica materials.

The present invention relates to nanoparticle aggregates comprising osteopontin (OPN) and one or more particles containing calcium and/or strontium and to their use for reducing or preventing biofilm growth or for removing biofilm. The invention furthermore relates to the use of the nanoparticle aggregates for treating, alleviating or preventing biofilm-related diseases.

Sunscreen additives for enhancing vitamin D production are provided herein. A method includes selecting phosphor materials to incorporate into zinc oxide particles, wherein the phosphor materials are capable of carrying out an up-conversion process whereby two or more photons absorbed by the zinc oxide particles and/or the phosphor materials within a first wavelength range are emitted as at least one photon within a second wavelength range. The method also includes incorporating the selected phosphor materials into the zinc oxide particles. A composition includes zinc oxide particles suspended within a medium of a sunscreen composition, and phosphor materials incorporated into the zinc oxide particles, wherein the phosphor materials are capable of carrying out an up-conversion process whereby two or more photons absorbed by the zinc oxide particles and/or the phosphor materials within a first wavelength range are emitted as at least one photon within a second wavelength range.

Zinc oxide compositions and methods for controlling zinc oxide particle size for sunscreen applications are provided herein. A method includes manipulating the size of multiple zinc oxide particles to be below a maximum threshold; selecting one or more media to be used in a sunscreen composition, wherein said selecting is based on the refractive index of each of the media; and integrating the manipulated zinc oxide particles into the selected media to create the sunscreen composition. A composition includes multiple zinc oxide particles, wherein each of the zinc oxide particles is (i) coated with an optical coating material and (ii) of a size that is below a maximum threshold; and a medium layer within which the zinc oxide particles are suspended, wherein the medium layer comprises a mixture of one or more media, and wherein each of the media has a refractive index below a predetermined threshold.

A cosmetic composition containing mica, lauroyl lysine, and water. The cosmetic composition meets at least one of the following conditions (i)-(iii): (i) wherein the weight ratio between the mica and lauroyl lysine is from about 2:1 to about 1:10; (ii) wherein the mica has a mean particle size of from about 5 microns to about 20 microns, and the lauroyl lysine has a mean particle size of from about 10 microns to about 40 microns, and the mean particle size ratio between the mica and lauroyl lysine is from about 1:1 to about 1:5; and (iii) wherein the lauroyl lysine has a flat polygonal shape. The cosmetic composition of the present invention can provide benefits from mica with reduced friction/reduced draggy feeling.

A sunscreen composition comprising from 20 to 25 wt % zinc oxide that is not surface treated and from 24 to 25 wt % water, the sunscreen composition being in the form of an emulsion having an aqueous phase and an oil phase, the sunscreen composition being free from organic UV filters or organic UV absorbers, the sunscreen composition having an SPF rating of 50 or more, the sunscreen composition being free from silicone materials and the sunscreen composition being free of titanium dioxide.

Disclosed are a dry mixture and a personal care composition, each comprising a fibrous material of natural origin and obtained from plants. The fibrous material comprises micro-scaled and/or nano-scaled fibril agglomerates. Such compositions show pleasant skin feel and comfort during and after application, as well as fast drying and fast absorption into skin. The compositions obtained are also particularly well suited for the topical delivery of cosmetic and pharmaceutical active substances into skin. Additionally, methods to obtain said dry mixture and said personal care composition are disclosed.