Personal care compositions contain a carrier that includes at least one hydrophobic component or gelling agent and optionally water, coral-shaped metal (e.g., gold) nanoparticles dispersed throughout the carrier and forming a nanoparticle stabilizing matrix within the carrier, and spherical-shaped metal (e.g., silver) nanoparticles dispersed throughout the carrier and stabilized by the nanoparticle stabilizing matrix formed by the coral-shaped metal nanoparticles. The spherical-shaped metal nanoparticles act as a preservative and prevent spoiling of personal care products. The coral-shaped metal nanoparticles provide personal care products with hydrodynamic and antioxidant properties. The weight ratio of coral-shaped metal nanoparticles to spherical-shaped metal nanoparticles can be 1:1 to 50:1. The concentration of coral-shaped metal nanoparticles can be 1 ppm or greater, and the concentration of spherical-shaped metal nanoparticles can be less than 1 ppm. Examples of personal care products include sprays, serums, oils, gels, creams, lotions, emulsions, and semi-solids.

Formulations comprising a nanostructured particles consisting of a solid acid, made of mixed oxides of silica and titania (TiO.sub.2—SiO.sub.2); supporting in its dispersed matrix: copper, silver, gold, iron, rutenium, rhodium, cobalt, zinc, palladium, zinc, manganese, iridium and/or platinum metals at minimal concentrations, and at least one functionalizing agent in contact with the particle, for use as a surface, material and personal cleaner.

A pigment comprising a plurality of photonic crystal particles dispersed in a medium, each photonic crystal particles containing a plurality of spectrally selective absorbing components dispersed within each photonic crystal particle that selectively absorb electromagnetic radiation without substantially absorbing electromagnetic radiation near a resonant wavelength of each photonic crystal particle, wherein each photonic crystal particle has a predetermined minimum number of repeat units of a photonic crystal structure, wherein the predetermined minimum number of repeat units is related to the resonant wavelength, the full-width at half maximum of the resonant wavelength, and the refractive index contrast in the photonic crystal.

Biocompatible UV-absorbing nanoparticles or microparticles that can be embedded in the skin using techniques such as those used to create a tattoo with tattoo ink. The “tattoo” using the biocompatible UV-absorbing nanoparticles or microparticles provides skin protection against sunburn, photoaging, and skin cancers in a permanent or semi-permanent way, but remain clear in the visible light spectrum, or matched closely to the user's specific skin tone. These particles can be solid uniform UV-absorbers, microencapsulated UV-absorbers, or UV-absorbing material embedded in or coated on solid materials. Long-term sun protection from an invisible (does not change the color of the skin) material, embedded in the skin (dermis layer).

Described herein are oral care compositions comprising metal silicates (e.g. potassium silicate); along with methods of making and using same.

The present disclosure provides low-water oral care compositions comprising a whitening agent and a flavor system encapsulating one or more flavor ingredients, wherein the flavor system provides improved taste to the consumer, masking the negative taste attributes of the whitening or oxidizing agents, and is also believed to be able to improve the flavor stability over the life of the product, and methods of using the same.

Treatment of skin tissue with photoactive materials and light, such as nanoparticles and formulations which are useful for cosmetic, diagnostic and therapeutic applications to mammals such as humans. In particular, embodiments of thermal treatment of the skin surface with metal nanoparticles in surfactant containing solutions are disclosed.

The present invention is a chemical formulation and method of using the chemical formulation to neutralize or eliminate odors on a surface. In one aspect, the chemical formulation is an aqueous solution of multi-valent citrate salts and a surfactant that may further comprise a fragrance and/or a color and/or a chelating agent. The method comprises the steps of applying this formulation in sufficient volume to saturate the surface thereby neutralizing or eliminating the odor. In another aspect, the formulation of multi-valent citrate salts may be applied in solid form to an odorous aqueous solution or may be used to coat an absorbent matrix that is expected to receive an odorous aqueous solution.

Delivery of compositions for treatment of skin tissue with photoactive plasmonic nanoparticles and light, with embodiments relating to delivery devices. Treatments are useful for cosmetic, diagnostic and therapeutic applications.

Disclosed is an encapsulated composition comprising at least one perfume and/or cosmetic ingredient that is entrapped in a matrix. The matrix comprises a starch and a hemicellulose.