The present application relates to a colouring solid particle for dyeing keratin fibres, in particular human keratin fibres such as the hair, comprising a core containing one or more direct dyes and/or one or more oxidation dye precursors and an upper coating layer covering said core and containing one or more cellulose ethers. The present application also relates to a process for preparing a dye composition comprising one or more colouring solid particles, to a process for the oxidation dyeing of keratin fibres, comprising the application of the composition obtained to said fibres, and to the use of this composition for dyeing keratin fibres.

The present patent application relates to a process for preparing a composition for dyeing keratin fibres, in particular human keratin fibres such as the hair, comprising a step of mixing several identical or different solid particles comprising one or more dyes, preferably one or more oxidation dye precursors, with an oxidizing aqueous composition, followed by a step of adding an alkaline aqueous composition preferably comprising arginine. The present patent application also relates to a dyeing process using the composition obtained.

The present invention relates to a structure for accelerating transdermal absorption, a manufacturing method thereof, and a cosmetic composition comprising the same, and the structure for accelerating transdermal absorption comprises an acicular body; a hydrophilic group binded to the acicular body; and a carrier binded to the hydrophilic group.

The present invention provides a solid composition containing an amorphous poorly water-soluble material, and a method for producing the same. The solid composition of the present invention is a solid composition containing an amorphous poorly water-soluble material (1a), hydroxypropylmethyl cellulose (2), and one or more types of water-soluble polysaccharides (3) other than hydroxypropylmethyl cellulose, and is characterized in that an XRD analysis value of the solid composition is 4.0% or less.

Surface-modified zinc oxide particles which have a silane coupling agent having an alkoxy group on surfaces thereof, in which d50 when measured with a laser diffraction/scattering type particle size distribution-measuring instrument by the following measurement method is 4 μm or less. (Measurement method) 10 g of the surface-modified zinc oxide particles, 88 g of cyclopentasiloxane, and 2 g of polyglyceryl-3 polydimethylsiloxyethyl dimethicone are mixed to obtain a liquid mixture, a dispersion treatment is performed on the obtained liquid mixture at 9,500 rpm for 5 minutes using a homogenizer to obtain a liquid dispersion, the liquid dispersion is diluted with cyclopentasiloxane so that a content of the surface-modified zinc oxide particles in the obtained liquid dispersion is 0.01% by mass to produce a measurement solution, and d50 is measured with the laser diffraction/scattering type particle size distribution-measuring instrument using the obtained measurement solution.

The present invention relates to a method for preparing solid microcapsules that comprises of the following steps: a) the preparation of a composition C1, comprising at least one water-soluble or hydrophilic substance dispersed in a hydrophobic phase; b) the addition, under stirring, of the said composition C1 in a polymeric composition C2, the compositions C1 and C2 being immiscible with each other, whereby an emulsion (E1) is obtained; c) the addition, under stirring, of the emulsion (E1) in a composition C3, the compositions C2 and C3 being immiscible with each other, whereby a double emulsion (E2) is obtained; d) the application of a shear to the emulsion (E2), whereby a double emulsion (E3) is obtained; and e) the polymerisation of the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained.

Disclosed are a scrub sponge and a preparation method therefor. The method for preparing the scrub sponge includes the operations of: obtaining a first mixture by stirring alkalizer, porogen, konjac powder, scrub granule and water, and filling the first mixture into a mold to form a preform, where the preform includes a first sponge layer; forming a parison by sequentially cooking and freezing the preform; and sequentially unfreezing, dehydrating and drying the parison to obtain the scrub sponge.

A method of preparing biocompatible and stable gold nanoparticles comprises preparing at least one flavonoid-rich plant extract, and mixing at least one of the plant extracts with an aqueous solution of at least one gold salt. The flavonoid-rich plant extract is an extract of Hubertia ambavilla or Hypericum lanceolatum. The gold nanoparticles may be used for medical and/or cosmetic purposes.

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 microp articles 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.

A near infrared blocking agent is provided which contains hydroxyapatite as an active ingredient effective to block near infrared rays. Also provided is a near infrared blocking topical skin preparation of which the content of the hydroxyapatite as the active ingredient is 0.1 to 20% by mass.