Hair care composition

Abstract

The present invention relates to a hair care composition comprising: a) a cationic surfactant selected from stearamidopropyl dimethylamine, behentrimonium chloride, stearyltrimethylammonium chloride, or mixtures thereof; b) 15 to 30% by weight of glycerin; and c) 0.1 to 2.0% by weight of a fatty alcohol, based on the total weight of the composition.

Description

Technical Field

[0001] The present invention relates to a hair care composition. In particular, the present invention relates to a stable translucent hair care composition exhibiting a desired sensory experience.

Background Art

[0002] Hair care compositions generally provide the benefits of cleansing or conditioning, or a combination of both. Hair cleansing compositions, typically sold as shampoos, typically contain one or more anionic cleansing surfactants that help to clean hair and scalp free of unwanted dirt, particles and fatty substances. Hair conditioners are another type of hair care composition and are generally used on wet hair after washing with shampoo. Compositions that provide the dual benefits of shampooing and conditioning are also known.

[0003] Hair conditioners generally contain cationic surfactants. The conditioning effect is achieved by including one or more conditioning agents in the hair care composition. Typically, the most common conditioning agents used in hair care compositions are water-insoluble oily substances such as mineral oils, natural oils such as triglycerides, and silicone polymers. The conditioning effect is realized by the deposition of the oily substance on the hair to form a film, which makes the hair easier to comb when wet and easier to handle when dry. The most commonly used hair conditioning agent is silicone.

[0004] However, a preferred hair care composition offers more benefits than simple cleansing and conditioning. For example, it is desirable to incorporate various beneficial agents into the hair care composition to provide benefits in addition to cleansing and conditioning. For instance, anti-dandruff effects are provided through hair care compositions. Dandruff is a problem that affects many people around the world. This condition manifests as clumps of dead skin cells flaking off the scalp. It is white in color and gives an aesthetically unpleasant appearance. The factors that cause dandruff are specific members of Malassezia yeast. To combat these, anti-dandruff products contain specific anti-dandruff agents with antifungal activity, such as piroctone olamine (Octopirox®), zinc pyrithione, azole antifungal agents (e.g., crimbazole, ketoconazole), selenium sulfide, or combinations thereof.

[0005] This invention relates to a translucent hair care composition comprising a combination of a cationic surfactant, a fatty acid, and glycerin. The inventors have unexpectedly discovered that the presence of certain levels of glycerin and fatty acids can improve the transparency of the hair care composition while providing a desired sensory experience.

[0006] WO17127344 (P&G) relates to a hair conditioning composition comprising (a) a cationic surfactant; (b) a high-melting-point aliphatic compound having a melting point of 25°C or higher; (c) a monoalkyl glyceryl ether; and (d) an aqueous carrier. An example contains 50% glycerin.

[0007] WO16115446 (P&G) relates to a hair conditioning composition comprising a cationic surfactant; a high-melting-point aliphatic compound having a melting point of 25°C or higher; a material having a refractive index of about 1.30 to about 1.70; and an aqueous carrier, wherein the composition has a transmittance of at least about 0.5%. An example is the inclusion of 50% or 60% glycerin. [Overview of the Initiative]

[0008] In the first aspect, the present invention is a) Cationic surfactants selected from stearamidopropyldimethylamine, behentrimonium chloride, stearyltrimethylammonium chloride, or mixtures thereof; b) 15-30% by weight of glycerin; and c) 0.1 to 2.0% by weight of fatty alcohol based on the total weight of the composition This relates to a hair care composition containing [a specific ingredient / component].

[0009] All other aspects of the present invention will become more readily apparent by considering the following detailed description and examples. [Modes for carrying out the invention]

[0010] These and other aspects, features and advantages will become apparent to those skilled in the art by reading the following detailed description and the attached claims. To avoid doubt, any feature of one aspect of the present invention may be utilized in any other aspect of the present invention. The expression “comprising” is intended to mean “including,” but not necessarily “consisting” or “composed of.” In other words, the steps or options described do not need to be comprehensive. It should be noted that the examples described below are intended to clarify the present invention and not to limit the present invention to those examples themselves. Similarly, all percentages are by weight / weight percent unless otherwise indicated. Except as in the examples and comparative examples, or unless expressly indicated, all figures expressed in this “Detailed Description” and “Claims” regarding the quantity of material or reaction conditions, physical properties of material and / or use should be understood as being modified by the word “about.” Numerical ranges expressed in the form “from x to y” are understood to include x and y. When multiple preferred ranges for a particular feature are described in the form "from x to y," it is understood that all ranges combining different endpoints are also considered. In other words, when specifying a range of values, a specific upper limit can be associated with a specific lower limit.

[0011] Regardless of whether the claims can be found without multiple dependencies or redundancies, the disclosures of the present invention as presented herein should be considered to encompass all embodiments found in claims that are multiplely dependent on one another.

[0012] If certain features are disclosed with respect to a particular aspect of the present invention (e.g., a composition of the present invention), such disclosure should be deemed applicable to any other aspect of the present invention (e.g., a method of the present invention) with necessary modifications.

[0013] As used herein, “hair care composition” means a composition for topical application to the hair and / or scalp of mammals, particularly humans. Such compositions may be classified as leave-on or rinse-off and include any product applied to the human body to improve appearance, cleansing, odor control, or overall aesthetics. The compositions of the present invention may be in the form of a liquid, lotion, cream, foam, scrub, gel, or bar. Non-limiting examples of such compositions include leave-on hair lotions and creams, and rinse-off shampoos, conditioners, shower gels, or toilet bars. The compositions of the present invention are preferably rinse-off compositions, particularly preferably shampoos or conditioners, and most preferably conditioners.

[0014] The transparency of a hair care composition can be expressed as transmittance (%). The transmittance % of the composition, measured at a wavelength of 600 nm, is preferably at least about 0.11%, more preferably at least 0.12%, and most preferably at least 0.13%.

[0015] Cationic surfactants The hair care composition of the present invention contains a cationic surfactant selected from stearamidopropyldimethylamine, behentrimonium chloride, stearyltrimethylammonium chloride, or a mixture thereof.

[0016] The hair care composition typically contains a cationic surfactant in an amount of 0.1 to 4%, more preferably 0.5 to 2%, based on the total weight of the hair care composition, and includes the entire range contained therein.

[0017] fatty alcohol The hair care composition of the present invention further comprises a fatty alcohol. The combined use of a fatty alcohol and a cationic surfactant is considered particularly advantageous because it results in the formation of a lamellar phase in which the cationic surfactant is dispersed.

[0018] Typical fatty alcohols contain 8 to 22 carbon atoms, more preferably 16 to 22 carbon atoms. Fatty alcohols are typically compounds containing linear alkyl groups. Preferred fatty alcohols include cetyl alcohol, stearyl alcohol, and mixtures thereof. The use of these materials is also advantageous in that they contribute to the overall conditioning properties of the composition of the present invention. However, the presence of high doses of fatty alcohol is thought to reduce the clarity of the hair care composition.

[0019] Therefore, the level of fatty alcohol present in the hair care composition of the present invention is in the range of 0.1 to 2%, preferably 0.2 to 2%, more preferably 0.5 to 2%, and even more preferably 1 to 2%, based on the total weight of the hair care composition, and includes all ranges within that range. The weight ratio of cationic surfactant to fatty alcohol is typically 1:1 to 1:10, more preferably 1:1.5 to 1:8, and most preferably 1:2 to 1:5.

[0020] Glycerin The glycerin used in this invention is known by various names, including glycerol, glycerin, and propane-1,2,3-triol.

[0021] The level of glycerin present in the hair care composition of the present invention is in the range of 15-30%, more preferably 20-30%, even more preferably 25-30%, and most preferably 25-28% based on the total amount of the hair care composition, and includes all ranges within that range.

[0022] Dandruff control The anti-dandruff agents present in the hair care composition are compounds active against dandruff, and are typically antibacterial agents, preferably antifungal agents. Suitable anti-dandruff agents that can be used in the present invention are selected from piroctone olamine (Octopirox®), selenium sulfide, and mixtures thereof. In preferred embodiments, the anti-dandruff agent is piroctone olamine.

[0023] Suitable anti-dandruff agents that can be used in the present invention are selected from piroctone olamine (Octopirox (registered trademark)), azole antifungal agents, selenium sulfide, and mixtures thereof. Preferred azole antifungal agents are ketoconazole, climbazole, or mixtures thereof. Preferably, the anti-dandruff agent is selected from piroctone olamine, climbazole, and mixtures thereof. In a particularly preferred embodiment, the anti-dandruff agent is piroctone olamine.

[0024] Typically, the hair care composition of the present invention contains an anti-dandruff agent in an amount of 0.01 to 5%, more preferably 0.01 to 3%, even more preferably 0.05 to 2%, and most preferably 0.05 to 1.5% based on the total weight of the hair care composition, and all ranges included therein are included.

[0025] silicone The composition of the present invention is directed to a composition that substantially does not contain silicone oil. The expression "substantially does not contain silicone oil" means that the silicone oil is present in the composition in an amount less than 1.0%, preferably less than 0.5%, more preferably less than 0.1%, and optimally not present in the composition. Most preferably, the composition does not contain a silicone compound.

[0026] The silicone oil according to the present invention is a silicone compound that is a non-volatile silicone. A non-volatile silicone means that the silicone has a vapor pressure of less than 0.1 mmHg (13.3 Pa), preferably less than 0.02 mmHg, more preferably less than 0.01 mmHg at 25°C and 1 atm.

[0027] The silicone oils according to the present invention include polydiorganosiloxanes, particularly polydimethylsiloxanes having the CTFA designation dimethicone. This definition also includes polydimethylsiloxanes having hydroxyl-terminated groups with the CTFA designation dimethiconol. For example, silicone rubbers with a slight degree of crosslinking, as described in WO96 / 31188 (UNILEVER), are also included in the definition of silicone oils according to the present invention.

[0028] Another type of silicone substantially excluded from the hair care compositions of the present invention is amino-functional silicone. “Amino-functional silicone” means a silicone containing at least one primary, secondary, or tertiary amine group, or a quaternary ammonium group. Examples of suitable amino-functional silicones include polysiloxanes having the CTFA name “amodimethicone.”

[0029] The hair care composition of the present invention may contain octyldodecanol. Octyldodecanol is a clear, slightly yellowish oily substance. It is available from Cognis under the trade name Eutanol G. It can be included in the composition in an amount of 0.01 to 5.0% by weight, preferably 0.1 to 3% by weight.

[0030] To protect against the growth of potentially harmful microorganisms, preservatives may also be incorporated into the hair care composition of the present invention. Suitable conventional preservatives include alkyl esters of parahydroxybenzoic acid, hydantoin derivatives, propionates, and various quaternary ammonium compounds. Exemplary but non-limiting examples of the types of preservatives that may be used in the present invention include, for example, phenoxyethanol, sodium salicylate, methylparaben, butylparaben, propylparaben, diazolidinyl urea, sodium dehydroacetate, 1,2-hexanediol, benzyl alcohol, sodium benzoate, iodopropynyl butylcarbamate, caprylyl glycol, disodium EDTA, or mixtures thereof. In particularly preferred embodiments, the preservative is 1,2-hexanediol, benzyl alcohol, or a mixture thereof. The preservative is preferably used in an amount ranging from 0.01 to 2% by weight of the hair care composition.

[0031] The compositions of the present invention may contain other components to enhance performance and / or consumer acceptability. Such components include fragrances, dyes and pigments, pH adjusters, pearlescent or opaque agents, viscosity modifiers, preservatives, and natural hair nutrients such as plant and fruit extracts, sugar derivatives, and amino acids.

[0032] The compositions of the present invention are primarily rinse-off or leave-on compositions, preferably rinse-off compositions such as conditioners, and are intended for topical application to at least a portion of an individual's scalp and / or hair.

[0033] The present invention will now be described with reference to the following non-limiting embodiments. [Examples]

[0034] Examples 1-5: Transparency improved by conditioner compositions containing 15-30% glycerin. The following hair care compositions, shown in Table 1, were prepared. The transparency of the compositions was tested by measuring the % transmittance at 600 nm. The procedure used to measure the % transmittance was as follows:

[0035] Sample preparation: The composition was centrifuged to remove errors caused by air bubbles. The apparatus used was a Sigma 3-18K centrifuge equipped with a Rotor 19776. The parameters were set to 8000 rpm, 5 minutes, and 25°C.

[0036] % Transmittance Test: % transmittance is calculated by multiplying the intensity of transmitted light (I) by the intensity of incident light (I). o This is the ratio to ). The instrument used was a Cary series UV-Vis spectrophotometer in total transmission mode (TTRAN) with a 10 mm wide transmission cell. The % transmittance value of the sample was measured at a wavelength of 600 nm.

[0037] [Table 1]

[0038] The data in Table 1 above shows that the compositions according to the present invention (Examples 1-5) exhibit higher transparency compared to compositions outside the scope of the present invention (Examples A-C). It was also shown that increasing the amount of fatty alcohol (above 2%) adversely affects the transparency of the compositions.

[0039] Example 2: Sensation improved by a conditioner composition containing 15-30% glycerin. The following hair care compositions, shown in Table 2, were prepared.

[0040] [Table 2]

[0041] The sensory experience provided by the composition of the present invention (Example 2) was compared with the sensory experience of a composition outside the scope of the present invention (Example D) in a beauty salon test.

[0042] In a beauty salon examination, a sample test was conducted on 36 female respondents. The respondents were evaluated before the test to ensure they had the same hair type (e.g., normal hair, dry hair, oily hair, etc.). For the prescribed test, 18 respondents with normal hair and 18 respondents with oily hair were selected. The evaluation was performed by trained beauticians with good sensitivity. The evaluation method involved a paired comparison: one half of the head was washed with one sample, and the other half of the head was washed with the other sample.

[0043] The results showed that composition example 2 was significantly superior (at least 95% confidence interval) to example D in the following properties.

[0044] Wetness level: - The rinsing time for the hair fragments will be longer.

[0045] Drying stage: -It has volume.

[0046] - The visible spread from the scalp is significant.

[0047] -It has more shine.

[0048] -Less sticky.

[0049] Data from beauty salon tests shows that the composition according to the present invention (Example 2) exhibits good transparency compared to a composition outside the scope of the present invention (Example D), while also providing an improved feel during use.

[0050] Example 6: Transparency improved by a conditioner composition containing a low amount of fatty acids The following hair care compositions, shown in Table 3, were prepared. The transparency of the compositions was tested by measuring the % transmittance at 600 nm. The procedure used to measure the % transmittance was the same as that disclosed above.

[0051] [Table 3]

[0052] The data in Table 3 above shows that the composition according to the present invention (Example 6) exhibits higher transparency compared to a composition outside the scope of the present invention (Example E). It also shows that an increase in the amount of fatty alcohol (more than 2%) adversely affects the transparency of the composition.

Claims

1. a) Cationic surfactants selected from stearamidopropyldimethylamine, behentrimonium chloride, stearyltrimethylammonium chloride, or mixtures thereof; b) 15-30% by weight of glycerin; and c) A translucent hair care composition comprising 0.1 to 2.0% by weight of a fatty alcohol selected from the group consisting of cetyl alcohol, stearyl alcohol, and mixtures thereof, based on the total weight of the composition, wherein the composition contains an anti-dandruff agent. The translucent hair care composition is a translucent hair care composition having a transmittance of at least 0.11% when measured at a wavelength of 600 nm.

2. The composition according to claim 1, wherein the anti-dandruff agent is selected from piroctone olamine, selenium sulfide, azole antifungal agents, and mixtures thereof.

3. The composition according to claim 2, wherein the anti-dandruff agent is piroctone olamine, crimbazole, or a mixture thereof.

4. The composition according to claim 2 or 3, wherein the anti-dandruff agent is present in an amount of 0.01 to 5% by weight of the composition.

5. The composition according to any one of claims 1 to 4, wherein the cationic surfactant is behentrimonium chloride.

6. The composition according to any one of claims 1 to 5, wherein the cationic surfactant is present in an amount of 0.01 to 4.0% by weight of the composition.

7. The composition according to any one of claims 1 to 6, wherein the fatty alcohol is present in an amount of 0.5 to 2.0% by weight of the composition.

8. The composition according to any one of claims 1 to 7, wherein the weight ratio of the cationic surfactant to the fatty alcohol is 1:1 to 1:

5.

9. The composition according to any one of claims 1 to 8, wherein the composition comprises less than 1% by weight of a silicone compound.

10. The composition according to any one of claims 1 to 9, wherein the composition comprises less than 0.1% by weight of a silicone compound.

11. The composition according to any one of claims 1 to 10, wherein the composition does not contain a silicone compound.

12. The composition according to any one of claims 1 to 11, wherein the composition comprises 0.01 to 5.0% by weight of octyldodecanol.

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