The present application discloses dual-function starch-based composite nanoparticles as well as a preparation method and application thereof. The preparation method comprises: hydrolyzing starch to form linear dextrin, grading the linear dextrin by using an alcohol-alcohol gradient precipitation method to obtain linear dextrin having homogeneous molecular weight distribution; oxidizing the linear dextrin by adopting an oxidation system to obtain oxidized dextrin; carrying out complex reaction on the oxidized dextrin and curcumin to form an oxidized dextrin-curcumin complex; and forming an oxidized dextrin-curcumin/chitosan hydrochloride composite nanoparticles from the oxidized dextrin-curcumin complex and chitosan hydrochloride. The aqueous phase solution of the dual-function starch-based composite nanoparticles containing gel polysaccharide is uniformly mixed with primary emulsion, calcium ion induction is carried out on the obtained double emulsion to obtain double-emulsion gel.

The present disclosure relates to spheroidal organosiloxane sub-micron/nanoparticle comprising a network consisting of organosiloxane, and a process to make them.

Disclosed herein are compositions comprising oolitic aragonite particles, wherein the oolitic aragonite particles have an average particle size of between 100 nm to 1 mm, and a Hunter brightness level greater than 88. Further disclosed herein are personal care and/or cosmetic compositions, comprising a carrier and the aforementioned oolitic aragonite particles. Further disclosed herein are methods of making and using the oolitic aragonite particles.

Oral care compositions with silica particles and stannous fluoride with an improved tin compatibility are disclosed. Oral care compositions with silica particles and stannous fluoride with a low level of an additional tin compound are disclosed. Oral care compositions with substantially spherical silica particles are disclosed.

The present invention relates to a method for increasing sun protection factor (SPF) of a sunscreen composition, use of porous metal oxide spheres (e.g., microspheres) for increasing SPF of a sunscreen composition and preparation of sunscreen compositions comprising the porous spheres.

The present invention relates to the cosmetic use of porous spheres comprising a metal oxide for improving the appearance and/or comfort of the skin, skin integuments, notably the hair, and/or mucous membranes. The invention also relates to a cosmetic or pharmaceutical composition comprising said spheres.

The present invention relates to the cosmetic use of porous spheres comprising a metal oxide for improving the appearance and/or comfort of the skin, skin integuments, notably the hair, and/or mucous membranes. The invention also relates to a cosmetic or pharmaceutical composition comprising said spheres.

Dentifrice containing silica particles having a d50 median particle size from 4 to 25 μm, a BET surface area of less than 10 m.sup.2/g, and a total mercury intrusion pore volume from 0.2 to 1.5 cc/g, are disclosed.

A method for manufacturing a colored sheet for coloring an object by adhesion to the object includes, a coloring step of applying by spraying, a first coating fluid containing first microparticles for coloring to a thin film of a print receiver body which has a sheet-shaped support body and the thin film, the thin film being peelably held on the sheet-shaped support body to serve as a base material of an adhesive sheet which is to be adhered to the object, and a restricting step of applying by spraying, before the coloring step, a second coating fluid for restricting the first microparticles from penetrating the thin film to a location where the first coating fluid is to be applied.

Spherical polyester-based resin particles characterized in that the spherical polyester-based resin particles contain a polyester-based resin and have a crystallinity of 20% or less and an average circularity of 0.96 or more. The spherical polyester-based resin particles according to the present invention can provide suitable resin particles as compounding agents for cosmetics such as foundation, antiperspirants, and skin scrubs; various agents such as matte coating agents for paints, rheology modifying agents, antiblocking agents, slipperiness-imparting agents, light diffusion agents, electroconductive agents, and diagnostic testing agents for medical use; and additives to molded articles such as automobile materials and construction materials.