Hair conditioning ingredients

Abstract

A hair conditioning formulation is provided that includes a dermatologically acceptable vehicle and a conditioning polymer, the conditioning polymer being a dextran polymer functionalized with tertiary amine groups, the dextran polymer having a weight average molecular weight of 50,000 to 3,000,000 daltons.

Description

[Technical Field]

[0001] The present invention relates to a hair conditioning formulation. In particular, the present invention relates to a hair conditioning formulation comprising a dermatologically acceptable vehicle and a conditioning polymer, wherein the conditioning polymer is a dextran polymer functionalized with a tertiary amine group, and the dextran polymer has a weight-average molecular weight of 50,000 to 3,000,000 daltons.

[0002] Traditional hair conditioners are popular with consumers for treating hair. Silicone-based conditioning agents are the most commonly used conditioning agents in hair conditioning formulations. However, there is growing concern among some consumers regarding the persistence and potential toxicity of certain silicone-based conditioning agents in the environment, particularly D4 and D5 conditioners. Therefore, there is growing interest in developing silicone-free alternative conditioning agents for use in hair conditioning formulations.

[0003] In U.S. Patent No. 5,879,670, Melby et al. disclose non-silicon-containing amphoteric electrolyte polymers for use as conditioning agents for the treatment of keratin-containing substrates. In particular, Melby et al. disclose (meth)acrylamidopropyltrimethylammonium chloride, meth(acrylic acid) or 2-(meth)acrylamido-2-methylpropanesulfonic acid, and optionally C 1~22 This invention discloses novel conditioning polymers containing alkyl (meth)acrylates, as well as their use in cosmetically acceptable media for treating keratin-containing substrates.

[0004] Nevertheless, there is still a need for new hair conditioning agents that provide conditioning effects. Furthermore, there is still a need for new hair conditioning agents that have a higher natural origin index (ISO 16128) compared to conventional hair conditioning agents.

[0005] The present invention provides a hair conditioning formulation comprising a dermatologically acceptable vehicle and a conditioning polymer, wherein the conditioning polymer is a dextran polymer functionalized with a tertiary amine group, and the dextran polymer has a weight-average molecular weight of 50,000 to 3,000,000 daltons.

[0006] The present invention provides a hair conditioning formulation comprising a dermatologically acceptable vehicle and a conditioning polymer, wherein the conditioning polymer is a dextran polymer functionalized with a tertiary amine group, the dextran polymer having a weight-average molecular weight of 50,000 to 3,000,000 daltons, and the tertiary amine group is of formula (A) bonded to a pendant oxygen on a branched dextran polymer.

[0007] [ka] During the ceremony,

[0008] [ka] is a pendant oxygen on a branched dextran polymer, X is a divalent linking group that attaches a tertiary amine moiety to the pendant oxygen on the dextran polymer, z is 0 or 1, and R 2 and R 3 Independently, C 1~7 Selected from the group consisting of alkyl groups.

[0009] The present invention provides a method for conditioning mammalian hair, comprising selecting a hair conditioning compound of the present invention and applying the hair conditioning compound to mammalian hair. [Modes for carrying out the invention]

[0010] To our surprise, the inventors have discovered that dextran polymers functionalized with tertiary amine groups act as conditioning polymers that effectively restore the hydrophobicity of damaged hair and reduce the force required to comb treated hair.

[0011] Unless otherwise specified, ratios, percentages, and parts are expressed by weight.

[0012] As used herein, unless otherwise indicated, "molecular weight" or M W The term refers to weight-average molecular weight measured by conventional methods using gel permeation chromatography (GPC) and conventional standards such as polyethylene glycol standards. The GPC technique is described in detail in *Modern Size Exclusion Chromatography*, WWYau, JJKirkland, DDBly; Wiley-Interscience, 1979, and in *A Guide to Materials Characterization and Chemical Analysis*, JPSibilia; VCH, 1988, pp. 81-84. Molecular weight is reported herein in units of Daltons or equivalently in g / mol.

[0013] As used herein and in the appendices, the term “dermatologically acceptable” refers to ingredients typically used for topical application to the skin, and it is intended to emphasize that materials that are toxic when present in amounts typically found in skincare compositions are not intended as part of the present invention.

[0014] Preferably, the hair conditioning formulation of the present invention is selected from the group consisting of a conditioning shampoo formulation, a rinse-off conditioner formulation, and a leave-on conditioner formulation. More preferably, the hair conditioning formulation of the present invention is selected from the group consisting of a rinse-off conditioner formulation and a leave-on conditioner formulation. Most preferably, the hair conditioning formulation of the present invention is a rinse-off conditioner formulation.

[0015] Preferably, the hair conditioning formulation of the present invention comprises a dermatologically acceptable vehicle (preferably, the hair conditioning formulation comprises 50 to 99.9% by weight (preferably 75 to 99.85% by weight, more preferably 80 to 99.8% by weight, most preferably 90 to 99.75% by weight) of a dermatologically acceptable vehicle based on the weight of the hair conditioning formulation) and a conditioning polymer (preferably, the hair conditioning formulation comprises 0.1 to 1% by weight (more preferably 0.15 to 0.75% by weight, more preferably 0.2 to 0. weight%, most preferably 0.25 to 0.4% by weight) of a conditioning polymer based on the weight of the hair conditioning formulation), and the conditioning polymer is a dextran polymer functionalized with a tertiary amine group, and the dextran polymer has a weight average molecular weight of 50,000 to 3,000,000 daltons.

[0016] Preferably, the hair conditioning formulation of the present invention is a liquid formulation. More preferably, the hair conditioning formulation of the present invention is an aqueous liquid formulation.

[0017] Preferably, the hair conditioning formulation of the present invention comprises 50 to 99.9% by weight (preferably 75 to 99.85% by weight, more preferably 80 to 99.8% by weight, most preferably 90 to 99.75% by weight) of a dermatologically acceptable vehicle, based on the weight of the hair conditioning formulation. More preferably, the hair conditioning formulation of the present invention comprises 50 to 99.9% by weight (preferably 75 to 99.85% by weight, more preferably 80 to 99.8% by weight, most preferably 90 to 99.75% by weight) of a dermatologically acceptable vehicle, based on the weight of the hair conditioning formulation, and the dermatologically acceptable vehicle comprises water. Even more preferably, the hair conditioning formulation of the present invention comprises 50 to 99.9% by weight (preferably 75 to 99.85% by weight, more preferably 80 to 99.8% by weight, most preferably 90 to 99.75% by weight) of a dermatologically acceptable vehicle, based on the weight of the hair conditioning formulation, and the dermatologically acceptable vehicle comprises water and an aqueous C 1~4 selected from the group consisting of alcohol mixtures. Most preferably, the hair conditioning formulation of the present invention comprises 50 to 99.9% by weight (preferably 75 to 99.85% by weight, more preferably 80 to 99.8% by weight, most preferably 90 to 99.75% by weight) of a dermatologically acceptable vehicle, based on the weight of the hair conditioning formulation, and the dermatologically acceptable vehicle is water.

[0018] Preferably, the water used in the hair conditioning formulation of the present invention is at least one of distilled water and deionized water. More preferably, the water used in the hair conditioning formulation of the present invention is distilled and deionized.

[0019] Preferably, the hair conditioning formulation of the present invention contains 0.1 to 1% by weight (preferably 0.15 to 0.75% by weight, more preferably 0.2 to 0.5% by weight, most preferably 0.25 to 0.4% by weight) of a conditioning polymer based on the weight of the hair conditioning formulation, wherein the conditioning polymer is a dextran polymer functionalized with a tertiary amine group. More preferably, the hair conditioning formulation of the present invention comprises 0.1 to 1% by weight (preferably 0.15 to 0.75% by weight, more preferably 0.2 to 0.5% by weight, most preferably 0.25 to 0.4% by weight) of a conditioning polymer based on the weight of the hair conditioning formulation, wherein the conditioning polymer is a dextran polymer functionalized with tertiary amine groups, and the conditioning polymer has a Kjeldahl nitrogen content, TKN, of 0.5 to 5.0% by weight (preferably 0.75 to 4% by weight, more preferably 1 to 3.5% by weight, most preferably 1.5 to 3.0% by weight) measured using a Buchi KjelMaster K-375 automated analyzer as described in ASTM method D-2364, corrected for volatile substances and ash.

[0020] Preferably, the conditioning polymer is a dextran polymer functionalized with a tertiary amine group, and the dextran polymer has a weight-average molecular weight of 50,000 to 3,000,000 daltons (preferably 100,000 to 2,000,000 daltons, more preferably 125,000 to 1,000,000 daltons, even more preferably 130,000 to 650,000 daltons, and most preferably 145,000 to 525,000 daltons). More preferably, the conditioning polymer is a dextran polymer functionalized with a tertiary amine group, the dextran polymer having a weight-average molecular weight of 50,000 to 3,000,000 daltons (preferably 100,000 to 2,000,000 daltons, more preferably 125,000 to 1,000,000 daltons, even more preferably 130,000 to 650,000 daltons, most preferably 145,000 to 525,000 daltons), and dext The run polymer is a branched dextran polymer containing multiple glucose structural units, wherein 90-98 mol% (preferably 92.5-97.5 mol%, more preferably 93-97 mol%, most preferably 94-96 mol%) of the glucose structural units are linked by α-D-1,6 bonds, and 2-10 mol% (preferably 2.5-7.5 mol%, more preferably 3-7 mol%, most preferably 4-6 mol%) of the glucose structural units are linked by α-1,3 bonds.Most preferably, the conditioning polymer is a dextran polymer functionalized with a tertiary amine group, and the dextran polymer has a weight-average molecular weight of 50,000 to 3,000,000 daltons (preferably 100,000 to 2,000,000 daltons, more preferably 125,000 to 1,000,000 daltons, even more preferably 130,000 to 650,000 daltons, most preferably 145,000 to 525,000 daltons), and the dextran polymer The remer is a branched dextran polymer containing multiple glucose structural units, wherein 90-98 mol% (preferably 92.5-97.5 mol%, more preferably 93-97 mol%, most preferably 94-96 mol%) of the glucose structural units are linked by α-D-1,6 bonds, and 2-10 mol% (preferably 2.5-7.5 mol%, more preferably 3-7 mol%, most preferably 4-6 mol%) of the glucose structural units are linked by α-1,3 bonds according to formula I.

[0021] [ka] In the formula, R is hydrogen, C 1~4 Alkyl alkyl groups, and hydroxy C 1~4 Selected from alkyl groups, the average branching from the dextran polymer backbone is less than or equal to 3 anhydrous glucose units.

[0022] Preferably, the branched dextran polymer contains less than 0.01% by weight of alternans based on the weight of the branched dextran polymer. More preferably, the branched dextran polymer contains less than 0.001% by weight of alternans based on the weight of the branched dextran polymer. Most preferably, the branched dextran polymer contains alternans below the detection limit.

[0023] Preferably, the conditioning polymer is a dextran polymer functionalized with a tertiary amine group, and the tertiary amine group is selected from the group consisting of a trialkylammonium moiety of formula (A) bonded to a pendant oxygen on the dextran polymer,

[0024]

Chemical formula

[0025]

Chemical formula

[0026] Preferably, the conditioning polymer contains aldehyde functional groups in amounts of less than 0.001 meq / gram (preferably less than 0.0001 meq / gram, more preferably less than 0.00001 meq / gram, and most preferably less than the detection limit).

[0027] Preferably, the conditioning polymer contains less than 0.1% (preferably less than 0.01%, more preferably less than 0.001%, and most preferably less than the detection limit) of β-1,4 bonds between individual glucose units in the conditioning polymer.

[0028] Preferably, the conditioning polymer contains less than 0.1% (preferably less than 0.01%, more preferably less than 0.001%, and most preferably less than the detection limit) of β-1,3 bonds between individual glucose units in the conditioning polymer.

[0029] Preferably, the conditioning polymer contains a silicone with functional groups in a quantity of less than 0.001 meq / gram (preferably less than 0.0001 meq / gram, more preferably less than 0.00001 meq / gram, and most preferably less than the detection limit).

[0030] Preferably, the hair conditioning formulation of the present invention contains less than 0.01% by weight (preferably less than 0.001% by weight, more preferably less than 0.0001% by weight, and most preferably less than the detection limit) of dermatologically acceptable oils based on the weight of the hair conditioning formulation. More preferably, the hair conditioning formulation of the present invention contains less than 0.01% by weight (preferably less than 0.001% by weight, more preferably less than 0.0001% by weight, most preferably less than the detection limit) of dermatologically acceptable oils based on the weight of the hair conditioning formulation, and the dermatologically acceptable oils are selected from the group consisting of hydrocarbon oils (e.g., mineral oil, petrolatum, polyisobutene, hydrogenated polyisobutene, hydrogenated polydecene, polyisohexadecane, natural oils (e.g., caprylic and capric triglycerides, sunflower oil, soybean oil, coconut oil, argan oil, olive oil, almond oil)), fragrance oils (e.g., limonene), and mixtures thereof.

[0031] Preferably, the hair conditioning formulation of the present invention contains less than 0.1% by weight (preferably less than 0.001% by weight, more preferably less than 0.0001% by weight, most preferably less than the detection limit) of silicone (e.g., polydimethylsiloxane, dimethicone, cyclodimethicone) based on the weight of the hair conditioning formulation.

[0032] Preferably, the hair conditioning formulation of the present invention contains less than 0.1% by weight (preferably less than 0.001% by weight, more preferably less than 0.0001% by weight, and most preferably less than the detection limit) of silicon (Si) molecules based on the weight of the hair conditioning formulation.

[0033] Preferably, the hair conditioning formulation of the present invention optionally contains antimicrobial agents / preservatives (e.g., benzoic acid, sorbic acid, phenoxyethanol, methylisothiazolinone), cleansing surfactants, rheology modifiers (e.g., PEG-150 pentaerythrityl tetrastearate), soap, colorants, pH adjusters, antioxidants (e.g., butylated hydroxytoluene), humectants (e.g., glycerin, sorbitol, monoglycerides, lecithin, glycolipids, fatty alcohols, fatty acids, polysaccharides, sorbitan esters, polysorbates (e.g., polysorbate 20, polysorbate 40, polysorbate 60, and polysorbate 80), diols (e.g., propylene glycol), diol analogs, triols, triol analogs, cationic compounds The product further comprises at least one additional ingredient selected from the group consisting of ionic polymeric polyols, waxes, foaming agents, emulsifiers, colorants, fragrances, chelating agents (e.g., tetrasodium ethylenediaminetetraacetate), preservatives (e.g., benzoic acid, sorbic acid, phenoxyethanol, methylisothiazolinone), bleaching agents, lubricants, sensory modifiers, sunscreen additives, vitamins, proteins / amino acids, plant extracts, natural ingredients, bioactives, degradation inhibitors, pigments, acids, penetrating agents, antistatic agents, anti-frizzy agents, anti-dandruff agents, hair weaving / straightening agents, hair styling agents, absorbents, hard particles, soft particles, conditioning agents (e.g., guar hydroxypropyltrimonium chloride, PQ-10, PQ-7), lubricants, opacifiers, pearlescent agents, and salts. More preferably, the hair conditioning formulation of the present invention further optionally comprises at least one additional component selected from the group consisting of antimicrobial agents / preservatives (e.g., benzoic acid, sorbic acid, phenoxyethanol, methylisothiazolinone), cleansing surfactants, rheology modifiers (e.g., PEG-150 pentaerythrityl tetrastearate), and chelating agents (e.g., tetrasodium ethylenediaminetetraacetate).Most preferably, the hair conditioning formulation of the present invention further optionally comprises at least one additional component selected from the group consisting of an antimicrobial / preservative mixture of phenoxyethanol and methylisothiazolinone, PEG-150 pentaerythrityl tetrastearate, tetrasodium ethylenediaminetetraacetate, and a mixture of phenoxyethanol and methylisothiazolinone.

[0034] Preferably, the hair conditioning formulation of the present invention further comprises a dermatologically acceptable hair care cleansing surfactant. More preferably, the hair conditioning formulation of the present invention further comprises a dermatologically acceptable hair care cleansing surfactant, the dermatologically acceptable hair care cleansing surfactant being alkyl polyglucoside (e.g., lauryl glucoside, coco-glucoside, decyl glucoside), glycinate (e.g., sodium cocoyl glycinate), betaine (e.g., alkyl betaine such as cetyl betaine and amide betaine such as cocamidopropyl betaine), taurate (e.g., sodium methyl cocoyl taurate) Thorium), glutamates (e.g., sodium cocoyl glutamate), sarcosinates (e.g., sodium lauroyl sarcosinate), isethionates (e.g., sodium cocoyl isethionate, sodium lauroyl methyl isethionate), sulfoacetates (e.g., sodium lauryl sulfoacetate), alaninates (e.g., sodium cocoyl alaninate), amphoacetates (e.g., sodium cocoamphoacetate), sulfates (e.g., sodium lauryl ether sulfate (SLES)), sulfonates (e.g., C 14~16Selected from the group consisting of sodium olefin sulfonate, succinate (e.g., disodium lauryl sulfosuccinate), fatty alkanolamides (e.g., cocamide monoethanolamine, cocamide diethanolamine, soyamide diethanolamine, lauramido diethanolamine, oleamide monoisopropanolamine, stearamide monoethanolamine, myristamide monoethanolamine, lauramido monoethanolamine, capramido diethanolamine, ricinoleamide diethanolamine, myristamide diethanolamine, stearamide diethanolamine, oleylamide diethanolamine, taloamide diethanolamine, lauramido monoisopropanolamine, taloamide monoethanolamine, isostearamido diethanolamine, isostearamido monoethanolamine), and mixtures thereof.

[0035] Preferably, the hair conditioning formulation of the present invention further comprises a thickening agent. More preferably, the hair conditioning formulation of the present invention further comprises a thickening agent, which is preferably selected to increase the viscosity of the hair conditioning formulation without substantially altering other properties of the hair conditioning formulation. Preferably, the hair conditioning formulation of the present invention further comprises a thickening agent, which is preferably selected to increase the viscosity of the hair conditioning formulation without substantially altering other properties of the hair conditioning formulation, and the thickening agent accounts for 0 to 5.0% by weight (preferably 0.1 to 5.0% by weight, more preferably 0.2 to 2.5% by weight, most preferably 0.5 to 2.0% by weight) based on the weight of the hair conditioning formulation.

[0036] Preferably, the hair conditioning formulation of the present invention further comprises an antimicrobial agent / preservative. More preferably, the hair conditioning formulation of the present invention further comprises an antimicrobial agent / preservative, the antimicrobial agent / preservative being selected from the group consisting of phenoxyethanol, benzoic acid, benzyl alcohol, sodium benzoate, DMDM ​​hydantoin, 2-ethylhexylglyceryl ether, isothiazolinone (e.g., methylchloroisothiazolinone, methylisothiazolinone), and mixtures thereof. Most preferably, the hair conditioning formulation of the present invention further comprises an antimicrobial agent / preservative, the antimicrobial agent / preservative being a mixture of phenoxyethanol and isothiazolinone (more preferably, the antimicrobial agent / preservative being a mixture of phenoxyethanol and methylisothiazolinone).

[0037] Preferably, the hair conditioning formulation of the present invention further optionally comprises a pH adjuster. More preferably, the hair conditioning formulation of the present invention further comprises a pH adjuster, and the hair conditioning formulation has a pH of 4 to 9 (preferably 4.25 to 8, more preferably 4.5 to 7, most preferably 4.75 to 6).

[0038] Preferably, the pH adjusting agent is selected from the group consisting of at least one of citric acid, lactic acid, hydrochloric acid, aminoethylpropanediol, triethanolamine, monoethanolamine, sodium hydroxide, potassium hydroxide, and amino-2-methyl-1-propanol. More preferably, the pH adjusting agent is selected from the group consisting of at least one of citric acid, lactic acid, sodium hydroxide, potassium hydroxide, triethanolamine, and amino-2-methyl-1-propanol. Even more preferably, the pH adjusting agent includes citric acid. Most preferably, the pH adjusting agent is citric acid.

[0039] Preferably, the method for conditioning mammalian hair according to the present invention comprises selecting a hair conditioning compound according to the present invention and applying the hair conditioning compound to the mammalian hair. Preferably, the method for conditioning mammalian hair according to the present invention further comprises wetting the hair with water before applying the hair conditioner. More preferably, the method for conditioning mammalian hair according to the present invention comprises selecting a hair conditioning compound according to the present invention, wetting the mammalian hair, and applying the hair conditioning compound to the wet mammalian hair. Preferably, the method for conditioning mammalian hair according to the present invention further comprises rinsing the hair with a rinse after applying the hair conditioner.

[0040] Herein, several embodiments of the present invention will be described in detail by the following examples.

[0041] Comparative Examples CF1-CF2 and Example F1: Hair Conditioning Formulations The hair conditioning formulations were prepared in each of the Comparative Examples CF1-CF2 and Example F1, using the formulations listed in Table 1.

[0042] [Table 1] 1 Available from Dow Chemical Company under the product name Cellosize (trademark) PCG-10. 2 Available from Dow Chemical Company under the product name Versene (trademark) 220. 3 Available from Croda Inc. under the product name Crodacol (trademark) CS50. 4 Available from Croda Inc. under the product name Arlacel(trademark) 165. 5 Available from Sigma Aldrich under catalog number D4876. 6 Available from Sigma Aldrich under catalog number D9885. 7 Available from The Dow Chemical Company under the product name Neolone (trademark) PE.

[0043] Hair conditioning performance Tests were conducted to evaluate the ease of combing hair treated with the rinse-off conditioner formulations of Comparative Examples CF1-CF2 and Example F1, both wet and dry. Slightly bleached Caucasian hair from International Hair Importers was used to test the conditioners. Each hair section weighed 2 grams. Each hair section was rinsed for 30 seconds under running 40°C tap water. Using a pipette, 0.4 grams of a solution containing 9% sodium lauryl sulfate was applied and lathered over the entire hair section for 30 seconds. The hair section was then rinsed under running water for 1 minute. Excess water was removed from each hair section by passing it between the index and middle fingers. The hair sections were then treated with the rinse-off conditioner formulations of Comparative Examples CF1-CF2 and Example F1, using a 0.4 g formulation per 1 g of hair, by massaging the formulation into wet / damp hair for 1 minute. Next, rinse the hair under running water for 30 seconds and let it dry at room temperature overnight.

[0044] Furthermore, an INSTRON Model 4464 running BlueHill 2 software was used to measure conditioning performance based on the ease of combing when wet and when dry. The tests utilized INSTRON strain gauges, which are equipped to measure the force required to comb hair. Conditioning performance was based on the ability of the rinse-off conditioner formulation to reduce the force required to comb hair, as measured by the INSTRON strain gauges. The force was reported as the mean comb load (ACL). A lower ACL value indicates a higher conditioning effect provided by the tested rinse-off conditioner formulation.

[0045] Following the INSTRON wet combing method, the hair was first wet by immersing it in distilled water, and then the hair was detangled by combing the hair section three times. Next, the hair section was tangled again by immersing it in distilled water three times. Excess water was removed from the hair section by passing it twice between the index and middle fingers of the hand. The hair section was placed on a hanger and combed with an INSTRON comb. The average wet combing force of the three hair sections was measured for each rinse-off conditioner formulation. The results of the average wet combing force are shown in Table 2.

[0046] Following the INSTRON dry combing method, the hair strands were detangled by combing them three times. Next, the hair strands were re-tangled by rotating them three times clockwise and three times counterclockwise. The hair strands were placed on hangers and combed with an INSTRON comb. The average dry combing force of the three hair strands was measured for each rinse-off conditioner formulation. The results of the average dry combing force are shown in Table 2.

[0047] [Table 2]

[0048] Hydrophobicity of hair Rinse-off hair conditioners prepared according to Comparative Example CF2 and Example F1 were tested on two separate 3g hair samples (lightly bleached Caucasian hair, International Hair Importers, Inc.). The hair samples were first rinsed with water for 30 seconds. Next, a 9% (wt / wt) aqueous solution of sodium lauryl sulfate was massaged into the hair samples for 30 seconds. Then, the hair samples were rinsed with water for 1 minute. Next, the hair samples were treated with 0.4g of rinse-off hair conditioner per gram of hair and massaged into the hair for 30 seconds. Then, the hair samples were rinsed with water for 30 seconds and dried before the hydrophobicity test.

[0049] To measure the hydrophobicity of the hair, strands of hair were combed straight and held firmly at both ends with a holder. Ten drops of water (30 μL per drop) were placed at different locations on each strand of hair, from root to tip. In the strands of hair treated with the formulation of Comparative Example CF2, the water was observed to dissipate immediately, while in the strands of hair treated with the formulation of Example F1, the water remained in a bead form even after 20 minutes, indicating that the rinse-off conditioner formulation of Example F1 successfully restored the hydrophobic benefit to slightly bleached Caucasian hair.

Claims

1. Hair conditioning formulation, Based on the weight of the hair conditioning formulation, it comprises 50 to 99.9% by weight of a dermatologically acceptable vehicle and 0.1 to 1% by weight of a conditioning polymer, based on the weight of the hair conditioning formulation. The dermatologically acceptable vehicle is water. The conditioning polymer is a dextran polymer functionalized with a tertiary amine group. Formula (A): The tertiary amine group is bonded to the pendant oxygen on the dextran polymer: 【Chemistry 1】 (In the formula, 【Chemistry 2】 (wherein R is the pendant oxygen on the dextran polymer, X is a -(CH2)y- group, y is 1 to 3, z is 1, and R2 and R3 are independently selected from the group consisting of C1 to C3 alkyl groups.) It is, The dextran polymer has a weight-average molecular weight of 50,000 to 3,000,000 Daltons. The hair conditioning compound contains less than 0.001% by weight of dermatologically acceptable oils based on the weight of the hair conditioning compound. A hair conditioning formulation wherein the aforementioned hair conditioning formulation is a rinse-off conditioner formulation.

2. The hair conditioning formulation according to claim 1, wherein the hair conditioning formulation contains less than 0.0001% by weight of dermatologically acceptable oil based on the weight of the hair conditioning formulation.

3. The hair conditioning formulation according to claim 2, wherein the hair conditioning formulation contains less than 0.1% by weight of silicon-containing molecules based on the weight of the hair conditioning formulation.

4. The hair conditioning compound according to claim 3, wherein the conditioning polymer has a Kjeldahl nitrogen content (TKN) of 0.5 to 5.0% by weight, and the Kjeldahl nitrogen content is measured using a Buchi KjelMaster K-375 automated analyzer and corrected for ash and volatile substances according to ASTM method D-2364.

5. The hair conditioning compound according to claim 4, wherein in formula (A), y is 2, and R2 and R3 are C2 alkyl groups.

6. The hair conditioning compound according to claim 5, further comprising a thickening agent.

7. The hair conditioning compound according to claim 6, further comprising a preservative.

8. A method for conditioning mammalian hair, Selecting the hair conditioning compound described in claim 1, and A method comprising applying the hair conditioning formulation to the hair of a mammal.

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