Hair treatment agents with a pH between 3.5 and 5.5 include a) 0.00001 to 20% by weight at least one proteolipid of the formula (I)

RXR(I), wherein R stands for a straight-chain or branched, saturated or unsaturated hydrocarbon group having 11 to 24 carbon atoms, R denotes a protein, a peptide, or a protein hydrolysate, X stands for C(O)O or N.sup.+(R.sup.III.sub.2)R.sup.IV or N(R.sup.III)R.sup.IV or C(O)N(R.sup.V)R.sup.VI, R.sup.III denotes (CH.sub.2).sub.xCH.sub.3 with x=0-22, R.sup.IV denotes CH.sub.2CH(OH)CH.sub.2 or (CH.sub.2).sub.x with x=0-22, and R.sup.V and R.sup.VI independently of one another stand for H or (CH.sub.2).sub.xCH.sub.3 with x=0-22, with the proviso that R stands for keratin or a keratin hydrolysate, when X stands for C(O)O, and b) 0.01 to 5.0% by weight, based on the total weight of the hair treatment agent, of magnesium citrate in a water-containing carrier.

The invention relates to a cosmetic composition comprising at least one cationic derivate of fructan and at least one anionic surfactant, non-ionic surfactant or amphoteric surfactant. The cationic derivate of fructan has preferably a molecular weight of less than 30000 g/l and preferably a solubility in water at a temperature of 25 C. of at least 20 wt %.

The invention further relates to a method for treating hair with such a cosmetic composition.

Compositions and methods useful for maintaining the structural integrity of keratin in the presence of hair bleaching agents and coloring dyes are disclosed. The compositions provide a significant improvement in minimizing hair breakage while improving hair conditioning, smoothness and styling.

A method of combatting colour loss from a dyed material, the method comprising contacting the material with a composition comprising an amine salt of a carboxylic acid wherein the carboxylic acid has 4 to 10 carbon atoms.

The present disclosure relates to methods for inhibiting color fading in hair and for improving the color durability and stability of artificial color of hair. The methods entail forming a layer-by-layer (LbL) film on hair, and optionally forming a cationic surface layer on the LbL film. The LbL film is formed by applying a cationic polymer layer on the hair and subsequently applying an anionic polymer layer on the cationic polymer layer. Multiple cationic polymer layers and anionic polymer layers can sequentially be added as desired. Finally, the LbL film may comprise a cationic surface layer.

The present invention relates to the field of cosmetic compositions, in particular hair compositions, for styling, shaping the hair, in particular shaping the hair in curls, and also the thermal protection of the hair. The invention also relates to the use of a leguminous-plant starch for shaping hair curls and also for preventing, eliminating or reducing thermal or chemical stress of hair.

A concentrate composition comprising: (a) at least 0.1 wt % of a surfactant compound; and (b) at least 10 wt % one or more ingredients selected from aldehydes, succinimidyl esters, chelating agents and amine salts of carboxylic acids.

Hair treatment products, comprising, in relation to their weight, from about 0.001 to about 20% by weight of a complexing agent from the group of tetrasodium-N,N- bis(carboxylatomethyl)-L-glutamate (tetrasodium glutamate diacetic acid, GLDA), pentasodium diethylenetriamine pentaacetic acid (DTPA), tetrasodium disucciniate (IDS), and mixtures thereof, and from about 0.001 to about 20% by weight of at least one proteolipid from the group (bl) cocodimonium hydroxypropyl hydrolyzed keratin and (b2) steardimonium hydroxypropyl hydrolyzed keratin, which lead to improved structural reinforcement of keratin fibres and improved hair care, and which reduce or prevent colour washout in dyed hair.

Hair treatment agents and methods for treating hair are provided. An exemplary hair treatment agent includes, based on the weight of the hair treatment agent, from about 0.001 to about 10 wt. % of at least one succinimidyl ester, at least one bivalent or trivalent metal salt, and at least one organic acid.

Hair treatment agents and methods for treating hair are provided. An exemplary hair treatment agent includes, based on the weight of the hair treatment agent, from about 0.001 to about 10 wt. % of at least one succinimidyl ester, and from about 0.001 to about 20 wt. % of at least one protein hydrolyzate.