A metal soap, including metal soap particles in which a fatty acid has from 6 to 22 carbons, and an inorganic crystal nucleating agent with an average particle size of 0.01 to 20 m absorbed internally into the metal soap particles, wherein the cumulative diameter at 50% of the metal soap particles on a volumetric basis is 1.0 to 30.0 m, and the internal absorption rate A, represented by formula (1) below, is 30% or greater.

Internal absorption rate A=100(X/X)=100Formula (1)

X; amount of inorganic crystal nucleating agent contained within metal soap

X; amount of inorganic crystal nucleating agent contained within pulverized metal soap passed through a 325-mesh filter (wherein X and X are average values obtained by elemental analysis at three locations in an area of 15 m square, using a scanning electron microscope/energy dispersive X-ray spectroscopy (SEM/EDX).

The present disclosure relates to quantum dot nanoparticles conjugated to ligands, and in particular quantum dot nanoparticles wherein each nanoparticle is conjugated to a polymerizable ligand. The present disclosure also relates to methods of making such conjugated quantum dot nanoparticles, and the use of such conjugated quantum dot nanoparticles as therapeutic agents, ablation agents and tattooing agents.

Provided are: a hydrophilized organic powder that is obtained by a hydrophilization treatment of a hydrophobic organic powder and has favorable properties; and a cosmetic that includes the hydrophilized organic powder. A hydrophilized organic powder that has a hydrophilizing-coat of polyoxyethylene (10) isostearyl ether on a hydrophobic organic powder is provided. Further, a cosmetic that includes the hydrophilized organic powder is provided. The hydrophobic organic powder is preferably an organic resin powder or a metallic soap powder, or a combination thereof.

A hydrophilic inorganic powder having excellent self-dispersibility in water or an aqueous solvent, which could not be conventionally achieved, and a cosmetic preparation containing the hydrophilic inorganic powder are provided by combining a hydrophilic surfactant and lipophilic surfactant. There is provided the hydrophilic inorganic powder comprising an inorganic powder as a base material; a hydrophobic-coat that covers the surface of the inorganic powder; and a hydrophilic-coat that covers the hydrophobic-coat, wherein ingredients of the hydrophilic-coat comprises both a hydrophilic surfactant and a lipophilic surfactant, and each of the hydrophilic surfactant and the lipophilic surfactant has a branched alkyl moiety in their molecules, wherein the hydrophilic inorganic powder has self-dispersibility in water or an aqueous solvent.

The present invention relates to a method for manufacturing solid round emulsion beads by dropping liquid emulsion into a cryogenic freezing refrigerant. The obtained solid round emulsion beads can be stored and used at a low temperature. The solid round emulsion beads can be coated with a solution containing a composition which is solid at room temperature or which can form gel. The emulsion beads can be prepared by using liquid emulsion containing additional composition, which is solid at room temperature or can form gel, in the water phase of oil-in-water (O/W) emulsion or the oil phase of oil-in-water (W/O) emulsion. The emulsion beads prepared by the present invention can maintain its shape without swelling and/or damage but with stability and does not give any grainy feeling when the liquid emulsion was applied on the skin.

The purpose of the present invention is to provide an oil-in-water emulsion composition exhibiting high UV-protective capabilities with which it is possible to uniformly and stably disperse a hydrophobized metal oxide into an inner phase (oil phase) without detracting from the inherent fresh sensation on use of an oil-in-water emulsion composition even when a high amount of the hydrophobized metal oxide is compounded therewith. In summary, the present invention is an oil-in-water emulsion composition characterized by including (A) 0.1-5 mass % of polyether-modified silicone having an HLB (Si) of 5-14, (B) one or more hydrophilic thickeners, (C) a metal oxide hydrophobized by an agent other than metal soap, and (D) nonvolatile oil other than silicone oil, the (C) hydrophobized metal oxide being present in the inner phase.

The present invention relates to a composite pigment comprising at least one small particle with a mean particle size of more than 100 nm and less than 1 m, preferably less than 600 nm, and more preferably less than 400 nm, wherein the surface of the small particle is at least in part covered with at least one layer comprising at least one inorganic solid UV filter and/or at least one coloring pigment. The composite pigment can be prepared by a method comprising a step of subjecting the small particle and at least one inorganic solid UV filter and/or at least one coloring pigment to a mechanochemical fusion process such as a hybridizer process. The composite pigment can be advantageously used as a component for a cosmetic composition.

A method for forming a coated particle having a core particle that is fully coated by a dual-layer coating that includes an inner layer formed of a hydrophilic composition and an outer layer formed of a hydrophobic polymer. The core particles are added to a hydrophilic solution and mixed together. The hydrophobic polymer is then added to form a mixture. The mixture is sonicated to coat the particles and the coated particles are separated and dried to form meta-stable coated particles.

An unground N.sup.-long chain acyl lysine crystal production method that includes: preparing a solution having at least one type of N.sup.-long chain acyl lysine dissolved in an acidic or basic solvent including water and/or one type selected from water-soluble organic solvents; dipping the solution into an acidic solution having a pH of at least 0.2 and less than 2.0, at a temperature of no more than 20 C.; and crystallizing N.sup.-long chain acyl lysine crystals.

An aqueous liquid cosmetic containing 1 to 20% by mass of (A) a flake aluminum powder coated with a layer containing a silicon compound; 0.5 to 10% by mass of (B) a polycarboxylic acid-based dispersant having a mass-average molecular weight of 10,000 or less; and 1 to 40% by mass of (C) a film-forming polymer emulsion in terms of a solid content is provide. Normally, the aqueous liquid cosmetic contains at least 40% by mass of water, and further may optionally contain (D) a color pigment as another ingredient. This aqueous liquid cosmetic is suitable for eye makeup applications such as eyeliners, eyebrows, eye colors, and the like.