A powder for use in a powder jet device for cleaning tooth surfaces by powder spraying, where the powder comprises at least 90 wt.-% of particles of a first material and 0.1-10 wt.-% of a second material, where the second material is coated on a surface of the particles of the first material and a solubility of the first material in water is ≥1 g/L.

A non-pyrogenic preparation containing nanoparticles synthesized by magnetotactic bacteria for medical or cosmetic applications. The nanoparticles are constituted by a crystallized mineral central part including predominantly an iron oxide, as well as a surrounding coating without material from the magnetotactic bacteria.

Disclosed herein is zinc/amino acid functionalized silica, compositions comprising the same, and oral care methods and uses for such compositions.

A composition includes polyphenolic particles and a surfactant, on the polyphenolic particles. The composition is lipophilic. The polyphenolic particles are non-pigmentary. A dispersion includes the polyphenolic particles, the surfactant, and a carrier vehicle. The carrier vehicle may be a cosmetically-acceptable fluid or a wax that is lipophilic.

A high amylose starch-based capsule, which includes an oily core and a breakable shell composition surrounding the oily core. The breakable shell composition is a gelled matrix derived from a gellable mixture including a partially-gelatinized high amylose starch, a hydrocolloid gelling agent, and optionally a filler. The high amylose starch based capsule is breakable under the application of a sufficient amount of force. The high amylose starch-based capsules have sufficient rigidity to maintain their integrity while incorporating into bulk matrices, such as chewing gums or compressed tablet.

A high amylose starch-based capsule, which includes an oily core and a breakable shell composition surrounding the oily core. The breakable shell composition is a gelled matrix derived from a gellable mixture including a partially-gelatinized high amylose starch, a hydrocolloid gelling agent, and optionally a filler. The high amylose starch based capsule is breakable under the application of a sufficient amount of force. The high amylose starch-based capsules have sufficient rigidity to maintain their integrity while incorporating into bulk matrices, such as chewing gums or compressed tablet.

A process for dyeing keratinous material, in particular human hair, comprising (a) applying an agent containing a pigment with a colored core and a silicon-containing coating, and (b) simultaneously or successively applying an agent containing an organic silicon compound with one, two or three silicon atoms.

Zinc oxide particles are prepared as a dry powder through a vapor phase formed by a plasma process, or by introducing defects into stoichiometric zinc oxide particles in a liquid carrier through mechanical stress. The zinc oxide has an O:Zn ratio of at least 0.99, an average particle size of 10 to 300 nm, and a sufficient concentration of oxygen vacancies and zinc vacancies to give a dispersion of the particles in C12-C15 alkyl benzoate an orange to tan color corresponding to a ΔE value of at least 15 in a Dispersion Color Test. The particles contain no aggregates and have no detectable particles 500 nm or larger, on a number-weighted basis

A series of particles, in which each particle contains at least 3 wt. % of pigment(s) in relation to the weight of the particle, a method for producing the series of particles, and uses thereof in cosmetic compositions, particularly in make-up for keratinous materials.

Zinc oxide particles are prepared as a dry powder through a vapor phase formed by a plasma process, or by introducing defects into stoichiometric zinc oxide particles in a liquid carrier through mechanical stress. The zinc oxide has an O:Zn ratio of at least 0.99, an average particle size of 10 to 300 nm, and a sufficient concentration of oxygen vacancies and zinc vacancies to give a dispersion of the particles in C12-C15 alkyl benzoate an orange to tan color corresponding to a ΔE value of at least 15 in a Dispersion Color Test. The particles contain no aggregates and have no detectable particles 500 nm or larger, on a number-weighted basis