The present disclosure relates to an active ingredient composition for the care of human hair. In particular, the present disclosure relates to a cosmetic composition for treating a keratinous material comprising a) at least one organic silicon compound and b) at least one cationic polymer, the cosmetic composition being particularly suitable for caring for damaged hair.

A method is provided for producing a composition comprising chitosan and water, comprising dissolving chitosan powder in an ionic liquid, to prepare a first composition comprising chitosan and ionic liquid; and contacting the first composition with water under conditions sufficient to solvent-exchange all or substantially all of the ionic liquid with water; to form a composition comprising chitosan and water. Compositions produced thereby and methods of using the compositions are provided.

The present disclosure relates to an active ingredient composition for shape change and surface modification of human hair. In particular, the present disclosure relates to a cosmetic agent for treating a keratinous material comprising a) at least one organic silicon compound and b) at least one thickener, the cosmetic agent being particularly suitable for treating colored hair.

The application describes a cosmetic agent for temporary deformation of keratinic fibers. The cosmetic agent includes, in a cosmetically acceptable carrier, a) at least one copolymer A formed from at least one monomer A1 selected from acrylic acid and/or methacrylic acid and at least one monomer A2 selected from acrylic acid esters and/or methacrylic acid esters, b) at least one cationic polymer B different from copolymer A selected from cationic guar derivatives, c) at least one polymer C different from copolymer A and polymer B, selected from cationic cellulose derivatives, and d) at least one propellant.

Novel articles of manufacture are described based on a combination of an adjunct material and microcapsules made by an improved process. The improved microcapsules are chitosan urea and encapsulate a benefit agent. The process comprises combining an adjunct material formed of microcapsules formed by a water phase comprising hydrolyzing chitosan in an acidic medium at a pH of 6.5 or less for an extended period and combining with a polyisocyanate. The reaction product of the hydrolyzed chitosan and polyisocyanate yields a microcapsule having improved release characteristics, with enhanced degradation characteristics in OECD test method 301B.

The instant disclosure generally relates to a composition for treating or coloring keratin fibers, the composition comprising at least one bio-based polymer and optionally a crosslinker. The composition may also comprise pigment microparticles. The composition formed and set in situ as a solid linked coating has a substantially permanent pigment lastingness and minimally alters the keratin fibers.

The present disclosure provides dermal fillers comprising hyaluronic acid-based hydrogels. The hydrogels are coacervates formed through ionic interactions between anionic polysaccharides, such as hyaluronic acid, and cationic polysaccharides, such as chitosan. The dermal fillers are useful for augmenting soft tissues, reducing soft tissue defects and improving skin quality.

A cosmetic composition comprising a plurality of capsules and a cosmetic base is provided.

A method for producing microcapsules with core material and shell material includes following steps: a) providing an aqueous two-phase system comprising at least one salt, which is at least partially not dissolved in this two-phase system and a core material, which is one phase of the two-phase system, and b) adding two solutions i) and ii) in the presence of at least one polymer soluble in solution i) and/or ii), wherein solution i) contains at least one salt of a cation of the salt from step a) and solution ii) contains at least one salt of an anion of the salt from step a). Microcapsules can be obtained or obtainable by the above method, and the microcapsules can be used in products and compositions.

The present invention relates to a carboxyalkyl chitosan, compositions comprising same, a process for manufacturing same, and various applications thereof, in particular in the field of therapy, rheumatology, ophthalmology, esthetic medicine, plastic surgery, internal surgery, dermatology or cosmetics.