Disclosed is a method of strengthening hair fibers using a hair composition comprising an amide and/or an alkyl ammonium carboxylate salt. The amide can be a monoamide and/or a bisamide. A method of protecting dyed hair color from fading or wash-out using the hair composition is also included.

Hair treatment agents and methods for treating hair using the hair treatment agents are provided. In an embodiment, a hair treatment agent comprises: at least one anionic surfactant from the group of a-olefin sulfonates; at least one anionic surfactant from the group of taurides; at least one amphoteric surfactant; at least one silver salt selected from silver acetate, silver adipate, silver citrate, silver galactarate, silver gluconate, silver lactate, silver malate, silver mandelate, silver salicylate, silver succinate, silver sulfate, and silver tartrate; and at least one organic acid selected from adipic acid, succinic acid, citric acid, acetic acid, galactaric acid, gluconic acid, malic acid, mandelic acid, lactic acid, salicylic acid, sulfuric acid, silver acetate, and tartaric acid, to reduce or prevent washing out of color from dyed hair.

The subject matter of the present disclosure is a hair treatment agent for reducing and/or avoiding bleeding out and/or fading of artificially produced hair colours and/or for strengthening the internal hair structure, containingrelative to the total quantity of hair treatment agent a) from about 1 to about 15 wt. % of a salt-containing component. comprising (i) at least one polyvalent salt of a fatty acid and/or (ii) at least one fatty acid (A1) and at least one polyvalent salt (A2). b) at least one cationic compound selected from cationic tensides of the group formed from quaternary ammonium compounds, esterquats and/or amidoamines and/or cationic polymers.

An isolated peptide consisting of FKCRRWQWRMKKL (SEQ ID NO: 1) for preserving the natural color of the hair, or slowing the decay in the natural pigment production of the hair follicle, or reducing the appearance of hair graying is provided. Also disclosed herein are methods and compositions for preserving the natural color of the hair, or slowing the decay in the natural pigment production of the hair follicle, or reducing the appearance of hair graying in a mammal subject.

Provided is a treatment composition for dyeing. The treatment composition for dyeing contains isophorone dimaleate or cystamine dimaleate as an active ingredient. The treatment composition for dyeing contains diamine dimaleate, in particular, isophorone dimaleate or cystamine dimaleate, thereby more effectively covering gray hair, preventing color loss and preventing damage to hair due to dyeing than conventional dyes.

A hair-protective composition includes collagen, a polyurethane binder, sericin and water. The collagen is contained in an amount of 10 wt % to 30 wt % based on a total weight of the hair-protective composition. A method of preparing the hair-protective composition includes melting collagen in water, dissolving sericin in the melted collagen and performing filtration and performing addition with a polyurethane binder and performing stirring. The hair-protective composition including collagen can be effectively used in techniques for protecting and softening the hair in the field of synthetic hair wigs and human hair wigs.

A method of treating a material, the method comprising contacting the material with a composition comprising a hydroxy-substituted aldehyde. In preferred aspects of the invention the material is a keratinous material.

A hair treatment agent for reducing and/or preventing the bleeding out and/or fading of artificially produced hair colors is provided herein. The hair treatment agent has a pH value in the range of from about 4 to about 5. The hair treatment agent includes, relative to the total amount of the hair treatment agent, from about 0.01 to about 10% by weight of a lanthanum and/or lanthanide salt, at least one anionic surfactant selected from the group of alkyl (ether) sulfates, sulfosuccinates, ether carboxylic acids, N-acylamino acids having 8 to 24 C atoms in the acyl group, (acyl) isethionates having 8 to 24 C atoms in the acyl group, and mixtures of these surfactants, and from about 0.01 to about 10% by weight of an organic acid selected from the group of maleic acid, lactic acid, acetic acid, propanoic acid, amino acids, and mixtures thereof.

Provided herein are color protectant compositions for dyed human hair, and methods for determining the same.

A method of treating a material, the method comprising contacting the material with a composition comprising a hydroxy-substituted aldehyde.