An object of the present invention is to provide fine particles excellent in biodegradability and touch feeling. Disclosed are cellulose acetate particles, the cellulose acetate particles have an average particle size of 80 nm or more and 100 μm or less, a sphericity of 0.7 or more and 1.0 or less, and a surface smoothness of 80% or more and 100% or less, and the cellulose acetate has a total degree of acetyl substitution of 0.7 or more and 2.9 or less.

Particulate aerogel material kit for grip enhancement, and related systems and methods, are generally described. Certain embodiments are related to interfaces comprising human skin, a layer of particulate aerogel material, and a solid surface. Methods of creating such interfaces, packaging the particulate aerogel material, and applications thereof (including kits for grip enhancement) are also described.

A layered solid formulation as one hydrogen supply material according to the present invention includes silicon fine particles having a capability of generating hydrogen and aggregates of the silicon fine particles, and a physiologically acceptable medium that gets contact with the silicon fine particles or the aggregates thereof. The hydrogen supply material is a hydrogen supply material for bringing the hydrogen into contact with the skin and/or the mucous membrane through the medium.

Semisolid oral dispersions for improving the health and/or appearance of the oral cavity. The semisolid oral dispersions include hydrophilic active agent particles in hydrophobic phase. The hydrophilic active agent particles can include bleaching agents, antimicrobial agents, anticalculus agents, and/or combinations thereof. The hydrophilic active agent particle can have a solubility in water of at least about 20 parts, by weight of the particles, in about 100 parts, by weight, of water. The hydrophobic phase can be semisolid petrolatum.

A process that includes simultaneous and/or sequential steps for separating, extracting and/or isolating all or part of the components contained in the inner aragonitic organo-mineral layer and in the outer calcitic organo-mineral layer of the shells of marine bivalve molluscs. Also, compositions including these components, such as cosmetics and medicinal products.

An emulsion composition and a method for preparing the emulsion composition are disclosed. The emulsion composition contains an inner phase; an external phase; and a plurality of interfacial particles surrounding the surface of the inner phase to form an interface, wherein the interfacial particles have a particle size smaller than the inner phase, and the interfacial particles include organic particles. The method for preparing the emulsion composition includes steps of: preparing a colloidal solution comprising a dispersion medium and organic particles dispersed in the dispersion medium; preparing an aqueous phase; preparing an oil phase; and mixing the colloidal solution, the aqueous phase, and the oil phase so as to prepare the emulsion composition.

Personal care composition having superior moisturizing, slipperiness and evacuation rate properties are disclosed.

Embodiments relate to a composition comprising nanohydroxyapatite (NHAP) in an amount about 0.5 wt. % to about 50 wt. % of the composition having a particle size in a range of about 20-100 nm, an abrasive, a sweetener, and a natural oil, wherein the composition does not contain glycerin and fluoride, wherein the composition is alkaline and a dental product, and wherein the natural oil is a plant product.

The present invention relates to an emulsion not containing any emulsifying surfactant, in particular to an oil-in-water emulsion not containing any emulsifying surfactant, characterized in that it comprises, especially in a physiologically acceptable medium, at least composite particles comprising a core comprising at least organic or inorganic particles A; said core being covered at the surface, continuously or discontinuously, with an envelope comprising at least organic or inorganic particles B; said particles A and B having different polarities.

The present invention relates to a cosmetic or pharmaceutical composition for topical application, said composition comprising the combination of a crosslinked oligo(ethylene glycol) based polymer in the form of an aqueous dispersion of microgel particles and a non-crosslinked water-soluble oligo(ethylene glycol) polymer. The invention also relates to a process for preparing this composition.