The disclosure provides a peptide microparticle structure that can easily penetrate into the bottom layer of the skin. The peptide microparticle structure is composed, from inside to outside, of a main core, a first lipid layer, an active ingredient layer, and a second lipid layer. The main core is disposed at the center of the peptide microparticle structure, and the outer part of the main core is completely covered by the first lipid layer. The outermost layer of the peptide microparticle structure is the second lipid layer, and between the first lipid layer and the second lipid layer is the active ingredient layer.

A composition comprises phenolic polymer particles and a surfactant, on the phenolic polymer particles. The composition is lipophilic. A dispersion comprises the phenolic polymer particles, the surfactant, and a carrier vehicle. The carrier vehicle may be a cosmetically-acceptable fluid or a wax that is lipophilic.

Disclosed herein are novel cosmetics or sunscreen preparations to absorb or scatter ultraviolet light and simultaneously scavenge free radicals, holes, electrons, or reactive oxygen species, and methods of preparing the same.

Microparticles comprising carboxylated, sulfated, or phosphated cellulose nanocrystals (CNCs) and pigment nanoparticles are provided. In these particles, the cellulose nanocrystals and the pigment nanoparticles are agglomerated together thereby forming said microparticle, and wherein the pigment nanoparticles are bound to the surface of the cellulose nanocrystals. Cosmetic preparations comprising these microparticles are also provided. Finally, a method for producing the microparticles is provided. The method comprises the steps of a) producing an aqueous suspension of carboxylated, sulfated, or phosphated CNCs with pigment nanoparticles bound thereto; and b) drying said aqueous suspension to produce the microparticles.

A composition comprises phenolic polymer particles and a surfactant, on the phenolic polymer particles. The composition is lipophilic. A dispersion comprises the phenolic polymer particles, the surfactant, and a carrier vehicle. The carrier vehicle may be a cosmetically-acceptable fluid or a wax that is lipophilic.

In an ultraviolet-shielding particle coated with silicon oxide of the present invention, a surface of the ultraviolet-shielding particle is coated with a silicon oxide coat, at least one functional group selected from the group consisting of an alkyl group, an alkenyl group, and a cycloalkyl group is present on a surface of the silicon oxide coat, and a content of the functional group is 0.0001% by mass or more and 0.30% by mass or less.

A product for providing a customized color shade sunscreen product to match a skin tone of a subject is provided, which comprises a color dose formulation, an instruction and optionally a sunscreen. The color dose formulation has high concentration of pigments and is suitable for being mixed with a sunscreen to prepare a customized color shade sunscreen product. Also provided is a method of preparing a customized color shade sunscreen product to match a skin tone. Such method so comprises mixing a selected color dose formulation with a sunscreen. The formulations may be selected from six color shade compositions that offer color shades suitable for all skin tones. The customized color shade sunscreen product may provide a sensorial benefit such as dry touch, good spreadability, no white residues, oil control and protection against UV rays, infrared rays and visible light.

Disclosed herein is a Janus particle comprising: a core inorganic photocatalytic particle having a surface with a first region and a second region and an average diameter of from 50 nm to 10 nm; and a low surface energy organic coating that is susceptible to photo-degradation, which coating is covalently bound to the surface of the core inorganic photocatalytic particle where present. Also disclosed herein is a method of manufacturing said particle.

Provided is a composition, especially a cosmetic composition, that comprises at least one monoglyceride and at least one tartaric ester of monoglyceride, and at least one coated pigment and/or mineral filler. Also provided is the use of a coated pigment and/or coated mineral filler for improving the stability of a composition, especially a cosmetic composition comprising at least one monoglyceride and at least one diacetyl tartaric ester of monoglyceride. Further provided is a cosmetic treatment method that implements the composition of the invention.

Semiconductor colloids grafted covalently with an antioxidant, the colloids being semiconductor colloids constituted by at least one element chosen from the group comprising C, Si, Ge, Sn, S, Se, Te, B, N, P, As, Al, Sb, Ga, In, Cd, Zn, O, Cu, Cl, Pb, Tl, Bi, Ti, U, Ba, Sr, Li, Nb, La, I, Mo, Mn, Ca, Fe, Ni, Eu, Cr, Br, Ag, Pt, Hg, and combinations thereof.