Disclosed herein are a biodegradable polymer microparticle for a filler comprising a core and a shell, wherein the core contains secondary particles including aggregates of a plurality of primary particles, the shell has a raspberry shaped structure, an average particle diameter (D.sub.50) of the biodegradable polymer microparticle ranges from 20 to 200 μm, a manufacturing method thereof, a freeze-dried body including the same, and filler injection including the same.

The present invention relates to a process for treating keratin materials, preferably human skin, in particular the lips, preferably in at least two steps involving, in a first stage, the application to said materials of an oily dispersion (A) comprising i) particles of copolymers of alkyl acrylates and of anhydride acrylics, ii) stabilizers, iii) one or more hydrocarbon-based oils; and then, in a second stage, the application to said materials of a composition (B) comprising iv) one or more amine compounds, it being understood that the process of the invention uses v) one or more cosmetic active agents chosen from a) pigments, b) active agents for caring for the skin, and c) UV-screening agents and also d) mixtures thereof; ingredients a) to d) possibly being found in composition (A), and/or in composition (B), and/or in another composition (C).

The process of the invention makes it possible to obtain a treatment of said keratin materials that is notably resistant to sweat, to shower gels, to water and to fatty substances, in particular plant or animal food oils, and more particularly plant oils such as olive oil, sunflower oil, walnut oil, hazelnut oil, etc.

The keratin material treatment process of the present patent application is also suitable for making up the skin or the lips, such as foundations and lipsticks.

Provided is a core-shell structure that can achieve both improvement in transdermal absorption of an active ingredient and reduction in skin irritation at a high level. A core-shell structure 10 includes: a core portion 11 containing an active ingredient, the core portion being solid; and a shell portion 12 containing both a first surfactant having a melting point of less than 35° C. and a second surfactant having a melting point of 35° C. or more, the first surfactant and the second surfactant each having an HLB value of 4 to 14, the first surfactant and the second surfactant each containing at least one selected from the group consisting of sorbitan fatty acid esters, glycerin fatty acid esters, propylene glycol fatty acid esters, and fatty acid alkanolamides.

The present invention relates to the use of surface-reacted calcium carbonate as stabilizing agent for a probiotic composition, wherein the surface-reacted calcium carbonate is a reaction product of natural ground calcium carbonate or precipitated calcium carbonate with carbon dioxide and one or more H.sub.3O.sup.+ ion donors, wherein the carbon dioxide is formed in situ by the H.sub.3O.sup.+ ion donors treatment and/or is supplied from an external source.

A sunscreen composition comprised of one or more sunscreen active agents encapsulated in a cellulose derived capsule wherein the composition can contain one or more additional agents. A sunscreen composition can be mixed with a body wash, an after shower body lotion, a shampoo, a conditioner, a soap, a gel, a hand sanitizer, a cream, a spray, a mouse, a lotion, an ointment, a make-up product, a lip balm, a hair spray product, an arachnid/insect repellent or a medicinal product.

The present invention relates to a cosmetic and/or dermatological composition comprising, in a physiologically acceptable medium: a) at least some hydrophobic aerogel particles, b) at least some silicone elastomer particles, c) at least one particle that absorbs sebum. The invention also relates to a process for making the skin matt and/or for reducing its shine.

The invention relates to a powder/granular material for producing a shower gel or shampoo, which contains a salt of a mono-C.sub.8-18-alkyl sulfate, in particular a salt of coco sulfate or lauryl sulfate, and an ammonium salt. The invention furthermore also relates to the use of the powder/granular material according to the invention for producing a shower gel or shampoo. The invention moreover relates to a shower gel/shampoo, which contains a salt of a mono-C.sub.8-18-alkyl sulfate, in particular a salt of coco sulfate or lauryl sulfate, an ammonium salt and water, characterized in that a further cosurfactant is present at most in a quantity by weight of less than half the quantity by weight of the salt of a mono-C.sub.8-18-alkyl sulfate.

A cosmetic composition including: (A) a silicone film-forming agent, and (B) a high-molecular-weight organopolysiloxane having a degree of polymerization of 2,600 or more and 4,500 or less. A ratio by mass of a content of the component (A) to a total content of the component (A) and the component (B), [(A)/((A)+(B))] is 50% or more and 98% or less, and a water content is 10% by mass or less.

Disclosed is a system and method for the delivery, into interdental spaces, of oral care active agents contained in particles. The particles are made of one or more superabsorbent polymers (SAP), and are of size generally small enough to be easily applied into an interdental space. To this end, the particles typically have a length of below 1.5 mm. By virtue of the SAP's ability of absorbing several times its own weight in water, the particles will swell once in contact with saliva. As a result, the volume of the particles as applied in between teeth increases by at least eight times, thereby effectively making the particles larger than the average interdental gap size. The particles, once swollen, are thus held more firmly between the walls of the interdental space, thus preventing them from being easily washed away.

The present invention relates to a cosmetic composition for immediately improving skin conditions such as skin wrinkles, skin elasticity, and the like, and specifically, it comprises an anionic particle and a polymer which ionically interacts with the anionic particle as active ingredients, and the composition shows wrinkle improvement and elasticity enhancement effects immediately without skin irritation after applied to skin, and excellently exhibits a wrinkle improvement effect in a cosmetic composition of weakly acidic or neutral pH and has outstanding formulation stability.