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 silane layer on the hair and subsequently applying an anionic polymer layer on the cationic silane. Multiple cationic silane layers and anionic polymer layers can sequentially be added as desired. Finally, the LbL film may comprise a cationic surface layer.

Hair treatment products comprising from about 0.001 to about 10% by weight of an amine salt of a carboxylic acid and from about 0.001 to about 20% by weight of a proteolipid of formula (II) RXR, in which R represents a straight-chain or branched, saturated or unsaturated hydrocarbon radical having from 11 to 24 carbon atoms, R represents a protein, a peptide or a protein hydrolysate, X represents C(O)O or N+(R.sup.III2)-R.sup.IV- or N(R.sup.III)R.sup.IV or C(O)N(R.sup.V)R.sup.VI, R.sup.III represents (CH.sup.2)x-CH.sup.3 wherein x=0-22 and R.sup.IV represents CH2CH(OH)CH2- or (CH2)x- wherein x=0-22; R.sup.V and R.sup.VI represent independently from each other H or (CH.sub.2).sub.xCH.sub.3 wherein x=0-22; with the proviso that R represents keratin or a keratin hydrolysate if X represents C(O)O, lead to improved structural reinforcement of hair and improved hair care, and reduce or prevent color washout in dyed hair.

Hair treatment products comprising, in relation to its 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 diacetate, GLDA), pentasodium diethylene-triamine pentaacetic acid (DTPA), tetrasodium disucciniate (IDS), and mixtures thereof, and from about 0.001 to about 20% by weight of at least one oligopetide, which comprises at least one amino acid sequence Glu-Glu-Glu, the amino group can be free or protoned and the carboxyl groups can be free or protoned, which lead to improved structural reinforcement of keratin fibers and improved hair care, and which reduce or prevent color washout in dyed hair.

Hair treatment products comprising, in relation to its weight, from about 0.001 to about 10% by weight of at least one amine salt of a carboxylic acid and from about 0.001 to about 50% by weight of at least one amino-functional silicon, 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 products comprising, in relation to its weight, from about 0.001 to about 20% by weight of at least one alpha-substituted aldehyde and from about 0.001 to about 50% by weight of at least one amino-functional silicon, which lead to improved structural reinforcement of keratin fibers and improved hair care, and which reduce or prevent color washout in dyed hair.

The present disclosure relates to hair treatment agents for reducing and/or preventing the bleeding and/or fading of artificially created hair colours, which agents comprise an aqueous cosmetic carrier, and

(a) have a pH value ranging from about 3.5 to about 6.0, and
(b) contain at least one alkaline earth salt of a dicarboxylic acid having from about 2 to about 8 C atoms.

Further subjects of the present disclosure are a method and a multi-component packaging unit in which the aforesaid hair treatment agents are used.

A further subject of the present disclosure is the use of a corresponding hair treatment agent for protecting the colour of dyed hair.

Hair treatment agents including: at least one fatty alcohol; at least one cationic surfactant; at least one silicone; and 10-undecenoic acid and/or salts thereof.

Suggested is a blend, comprising or consisting of: (a) at least one amino acid and/or at least one protein, and (b1) at least carboxylic acid alkyl ester and/or (b2) at least one diol, and optionally (c) at least at least one additional auxiliary agent.

A method for coloring hair, and a kit for coloring hair are provided. The method for coloring hair comprises applying to the hair a first composition comprising in a cosmetically acceptable carrier, one or more ionizable linkers of Formula I, or cosmetically acceptable salts thereof or mixtures thereof and applying to the hair a second composition comprising in a cosmetically acceptable carrier, one or more ingredients of Formula II and/or Formula III, or cosmetically acceptable salts thereof, or mixtures thereof and wherein the first composition does not comprise any ingredients of Formula II and/or Formula III of the second composition and any oxidative dye precursors; wherein the second composition does not comprise any ionizable linkers of Formula I of the first composition; and wherein the second composition further comprises a dye composition and optionally a developer composition wherein the developer composition comprises one or more oxidizing agents; and wherein the dye composition comprises one or more oxidative dye precursors comprising one or more couplers and one or more primary intermediates.

A personal care conditioning, color protecting and/or styling composition for a keratin substrate comprising: (A) at least one conditioning and/or styling ter/tetra polymer obtained from polymerizing: (i) about 0.1 wt. % to 99 wt. % of acrylamidopropyl trimethylammonium chloride (APTAC), a cationic monomer; (ii) about 0.1 wt. % to 30 wt. % of at least one anionic monomer selected from the group consisting of (a) acrylic acid (AA), (b) acrylamido methylpropyl sulfonate (AMPS), and/or (c) sodium methyl allyl sulfonate (SMAS); and (iii) about 0.1 wt. % to about 20 wt. % of methacryloylaminopropyl lauryl-dimethyl ammonium chloride (MAPLDMAC), a hydrophobically modified cationic monomer; (B) at least one cosmetically acceptable excipient; and (C) optionally, at least one effective amount of personal care active ingredient.