Disclosed is a method of crosslinking hair or other keratin fibers by (i) providing a crosslinking agent comprising an oxidized sugar having at least two aldehyde groups; and (ii) infiltrating a plurality of non-crosslinked hair or other keratin fibers with the crosslinking agent under conditions effective to cause protein molecules contained in the non-crosslinked hair or other keratin fibers to become crosslinked, thereby yielding a population of crosslinked hair or other keratin fibers. The protein molecules include amine groups that react with the aldehyde groups of the oxidized sugar to yield the crosslinked hair or other keratin fibers. Also disclosed are formulations for crosslinking hair or other keratin fibers and methods of using the formulations to treat human hair to maintain a desired three dimensional structure. This formulation includes a crosslinking agent having a plurality of oxidized sugars having at least two aldehyde groups or mixture thereof.

Disclosed is a method of crosslinking hair or other keratin fibers by (i) providing a crosslinking agent comprising an oxidized sugar having at least two aldehyde groups; and (ii) infiltrating a plurality of non-crosslinked hair or other keratin fibers with the crosslinking agent under conditions effective to cause protein molecules contained in the non-crosslinked hair or other keratin fibers to become crosslinked, thereby yielding a population of crosslinked hair or other keratin fibers. The protein molecules include amine groups that react with the aldehyde groups of the oxidized sugar to yield the crosslinked hair or other keratin fibers. Also disclosed are formulations for crosslinking hair or other keratin fibers and methods of using the formulations to treat human hair to maintain a desired three dimensional structure. This formulation includes a crosslinking agent having a plurality of oxidized sugars having at least two aldehyde groups or mixture thereof.

Disclosed are hair-straightening compositions in liquid form with an aqueous base, or in the form of an emulsion with a fatty phase, comprising glyoxylic acid and levulinic acid.

The invention relates to a hair treatment method for treating hair by using a hair treatment tool (1). The hair treatment tool (1) includes: a fiber structure member (5) that retains a hair cosmetic; and a liquid-impermeable sheet (3) to which the fiber structure member (5) is fixed. The fiber structure member (5) retains a hair cosmetic that includes a pigment and a film-forming resin, and is sealed in a packaging (2). The hair treatment method of the invention treats hair by: exposing a surface of the fiber structure member (5) of the hair treatment tool (1); and bringing the fiber structure member (5) into contact with hair, and in this state, moving the fiber structure member (5) in a direction of orientation of the hair.

The invention relates to a hair treatment method for treating hair by using a hair treatment tool (1). The hair treatment tool (1) includes: a fiber structure member (5) that retains a hair cosmetic; and a liquid-impermeable sheet (3) to which the fiber structure member (5) is fixed. The fiber structure member (5) retains a hair cosmetic that includes a pigment and a film-forming resin, and is sealed in a packaging (2). The hair treatment method of the invention treats hair by: exposing a surface of the fiber structure member (5) of the hair treatment tool (1); and bringing the fiber structure member (5) into contact with hair, and in this state, moving the fiber structure member (5) in a direction of orientation of the hair.

Cosmetic compositions, systems and methods for conferring responsive durable shaping of keratinous fibers employ at least one shape memory polymer that includes a four-armed branched polyethylene glycol (PEG) based polymer that is functionalized with one or more metal-coordination active groups. The shape memory polymer forms a crosslinked network coating on a substrate, for example a substrate selected from keratinous substrates, for example, hair. Hair coated with the shape memory polymer and treated with an oxidizing agent can be shaped, locked into shape, and reprogrammed by modulation of pH. The coated hair retains durable shaping properties through at least one shampoo treatment. The cosmetic compositions, systems and methods provide durable and reprogrammable durable shaping of the keratinous substrate, for example for styling hair.

A temporary hair dye composition contains a soap base and a pigment. A method for temporarily coloring hair comprises mixing the temporary hair dye composition including the soap base and the pigment with water to generate a foam, and then applying the foam to the hair.

The invention relates to a method for the cosmetic treatment of keratin fibres, in particular human keratin fibres, such as the hair, comprising a stage of application of a composition comprising at least one metal compound, the metal of which belongs to the group of the rare earth metals, and then a stage of application of a shampoo comprising at least one surfactant.

The subject of the present disclosure is a process for dyeing keratinous material, in particular human hair, comprising the following steps: Application of a pretreatment agent (V) to the keratinous material, the pretreatment agent being in a water-comprising carrier (V-1) comprises at least one anionic surfactant, and Application of a colorant (F) to the keratinous material, wherein the colorant is (F-1) at least one amino-functionalized silicone polymer and (F-2) comprises at least one pigment.

A second object of the present disclosure is a multi-component packaging unit which comprises the two colorants (V) and (F) in two separately packaged containers.

Methods and aqueous compositions for styling or reshaping keratinous fibers such as human hair are provided. An aqueous styling composition includes (a) 0.5 to 15.0% by weight of at least one disaccharide; and (b) 0.01 to 20.0% by weight of at least one alkali salt and/or alkaline earth salt, wherein the composition is free of synthetic film-forming polymers.