The purpose of the present invention is to provide an oil-in-oil emulsified cosmetic having exceptional transfer resistance after application, luster, excellent spread during application, and especially exceptional cosmetic durability. The present invention pertains to an oil-in-oil emulsified cosmetic characterized by containing (a) 5-80 mass % of a nonvolatile hydrocarbon oil and/or nonvolatile ester oil, (b) 1-70 mass % of a nonvolatile silicone oil, and (c) 2-12 mass % of a spherical powder having an average particle size of 1-10 μm, the oil-in-oil emulsified cosmetic moreover being characterized in that the (a) nonvolatile hydrocarbon oil and/or nonvolatile ester oil and the (b) nonvolatile silicone oil separate when mixed at 25° C. The blend ratio (mass ratio) of the (a) nonvolatile hydrocarbon oil and/or nonvolatile ester oil and the (b) nonvolatile silicone oil is preferably (a)/[(a)+(b)]=0.4-0.8.

One aspect of the present disclosure is an organic/inorganic composite powder and a composition including the same in which a coating film on a surface of an inorganic powder is not easily fall off under various conditions such as pH, temperature, physical force, etc., so that has excellent moisture retention and less transferring and allows for natural makeup.

Bridged polysilsesquioxane based sunscreens prepared as nanoparticles via oil/water microemulsion polymerization, sol-gel polymerizations, or a modified Stöber process. Minimized leaching and decreased levels of photo-degradation were achieved with covalent incorporation, with bridged incorporation necessary to ensure isolation of the sunscreen and any photo-products from skin. SPF values were found to be comparable to existing commercial sunscreens. Furthermore the bridged polysilsesquioxane based sunscreens can be classified as broad-spectrum, and rated from moderate to superior in terms of UVA protective ability.

An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.

The invention relates to particles of a calcium salt of a fatty acid having 12 to 22 carbon atoms, wherein the median size is 4.0 μm to 15.0 μm, the particle size digest A expressed by the following equation (1) satisfies the relation A≤2.0, and the average thickness is 350 to 800 nm.

Particle size digest A=(D90−D10)/D50  equation (1) (Here, 4.0≤D50≤15.0.) D10: the 10% cumulative size (μm) of the fatty acid calcium salt particles on a volumetric basis D50: the median size (μm) of the fatty acid calcium salt particles on a volumetric basis D90: the 90% cumulative size (μm) of the fatty acid calcium salt particles on a volumetric basis

Provided herein is a method of reducing or preventing sunburn caused from visible and ultraviolet radiation in a subject, the method comprising topically applying to the subject a sunscreen composition comprising inorganic UV filtering agents, antioxidants, and at least one inorganic pigment, wherein the at least one inorganic pigments and antioxidants are present in an amount effective to reduce or prevent sunburn caused from visible light. Also provided herein are sunscreen compositions and methods of increasing the SPF of a sunscreen composition that comprises at least one inorganic UV filtering agent.

The present invention relates to core shell silica particles, wherein each core shell silica particle comprises a silica core, and a surface of the silica core is etched with metal silicate, the core shell silica particles prepared by: i) admixing an amount of silica particles in water with an amount of a base, wherein the base comprises a monovalent metal ion, to produce core shell silica particles, each core shell silica particle comprising a silica core, and a surface of the silica core etched with a silicate of the monovalent metal ion; and ii) reacting the core shell silica particles formed in step i) with a metal salt comprising a second metal ion, to form core shell silica particles comprising silicate of the second metal ion on the surface of the silica core.

A toothpaste composition includes a structurant and a thickener, wherein the toothpaste composition has a predetermined viscosity and phase angle by using the structurant instead of reducing the content of a thickener, and thereby has an improved release property during use while maintaining a shape retention property of the toothpaste, and has an improved feeling of refreshment, flavor releasing power, cleaning power, and stain removal power. Further, provided is a toothpaste composition including a chelating agent containing phosphate and silica, wherein the chelating agent is supersaturated to precipitate phosphate to provide strong cleaning power, a whitening effect, a stain removal effect, and a crunchy sensation. Further, provided is a toothpaste composition including a peroxide, a thickener, and a spreading agent, wherein the peroxide and the thickener are separated from each other, providing excellent sense of use, stability, and a whitening effect in an anhydrous state.

Disclosed is a personal care composition comprising (a) particle comprising chitosan salt at the outer surface of the particle; and (b) functionalized non-volatile silicone, wherein the amount of the functionalized non-volatile silicone is greater than 20% by weight of the total non-volatile silicone.

To provide a beauty care sheet that can be realized much more easily than conventional methods in terms of a device and an effective manner for the purpose of filling groove portions formed into fine wrinkles, sagging wrinkles and the like of the skin and recovering youthful swelling of the skin. A microneedle array for skin application having a water-soluble polymer as a base and hydroxyapatite particles dispersed in the base, a beauty sheet intended to care for a groove portion of the skin, including the microneedle array for skin application, and a beauty sheet intended to care for wrinkles between eyebrows, wrinkles of nasolabial folds, or an intermammary groove, including the microneedle array for skin application. The particle size of the hydroxyapatite particles is preferably 5 μm or less.