Anhydrous hair care composition with thick viscosity

Abstract

The present invention relates to an anhydrous hair care composition having a thick viscosity. The invention particularly discloses a styling composition for anhydrous hairdressing. The composition comprises hydrogenated rapeseed oil and white wax and / or shea butter. These compositions can be effectively used to provide a canned shaped product that can be taken out with fingers. The formulation provides superior styling properties even without containing a styling polymer.

Description

Technical Field

[0001] The invention belongs to the field of cosmetics and relates to a waterless hair styling composition for human hair. Background Art

[0002] Hair styling products such as styling sprays, creams, mousses, gels, lotions or waxes allow consumers to temporarily style and shape their hair on the scalp in many personalized and original ways. The use of the above different product forms therefore depends on regional popularity and the desired results. For example, styling sprays are most often used to fix the position of pre-aligned hair fibers, while other products are usually distributed in the hair before shaping or forming the hairstyle. In both cases, the cosmetic composition most often contains a styling polymer that allows interfiber adhesion.

[0003] There are now a variety of styling products on the market that claim to increase volume, improve hold or reduce frizz, etc. However, this fact cannot obscure the fact that existing products still have many shortcomings and therefore there is still a need for further improvement in product performance.

[0004] One aspect should be that it is difficult to provide a stable water-free, polymer-free hair styling composition based on an oil and wax matrix. A challenging aspect is to achieve styling by distributing the composition through the hair so that it is fixed in the absence of a styling polymer. Therefore, the composition must be easy to distribute during use, but must be firm enough to allow the hair to be fixed in place.

[0005] Anhydrous oil / wax based styling products are prepared by heating all ingredients until they become liquid, then mixing the ingredients and cooling the mixture down to normal conditions. In order to be able to package the composition in a can, the cooled mixture should be solid or semi-solid.

[0006] If the hardness of the composition is greater than 5 g, it is considered to be solid. If the hardness of the composition is between 1 g and 5 g, it is considered to be semi-solid. The hardness is determined as the penetration force value measured according to the following protocol:

[0007] The penetration value is a measure of the hardness of the composition and indicates the maximum force at which a defined measuring probe, here a cylindrical probe P / 5 (5 mm diameter), is inserted vertically (axially) into the composition to be measured at a feed rate of 1 mm / s to reach a penetration depth suitable for measurement, here a penetration depth of 7 mm. The determination of the penetration value is carried out using a TA.XT / Plus texture analyzer (Stable Microsystems, UK). The maximum force is given in grams-force (g-force). Here, the lower the value, the softer the composition, the harder the composition, the higher the penetration value. The measurement is carried out under normal conditions.

[0008] In addition to the solidity of such compositions, it is also desirable to provide stable compositions. Thus, no oil separation should be observed and no precipitation of wax particles should occur.

[0009] Oil-based and wax-based styling compositions are described in DE 20005808 U1.

[0010] However, prior art formulations are mainly based on non-natural waxes and oils, such as liquid paraffin and microcrystalline wax, and polyethylene glycol-based waxes, such as PEG-200 palmitin. But today's consumers prefer to use non-oil-based wax-based products based on natural waxes. Summary of the invention

[0011] It is therefore an object of the present invention to provide stable solid or semisolid styling compositions based on natural oils and waxes which provide suitable styling for human hair.

[0012] The Applicant has surprisingly found that said object can be solved by the present invention.

[0013] The present invention relates to a water-free hair styling composition, which comprises

[0014] a) Hydrogenated rapeseed oil,

[0015] b) White wax and / or shea butter (Butyrospermum Parkii Butter).

[0016] The term "hair" as used throughout the description of the invention refers only to the hair on the human scalp.

[0017] Unless otherwise stated, all weight percentages (wt. %) given below are related to the total weight of the hair styling composition.

[0018] Unless otherwise stated, all tests were carried out under "normal conditions". The term "normal conditions" means 20°C, 1013 hPa and 50% relative humidity.

[0019] For the purpose of the present disclosure, the term "free of" means that the proportion of the corresponding substance is less than 0.05% by weight of the total composition. This ensures that inclusions or impurities of these substances are not covered by the "free of" of the present invention.

[0020] Furthermore, for the purposes of this disclosure, the term "anhydrous" means that the proportion of water is less than 0.05% by weight of the total composition. This ensures that entrained water of the substances contained in the formulation according to the present invention is not included.

[0021] According to the present invention, the composition is preferably free of styling polymers. In particular, the composition is preferably free of PVP, VP / VA copolymer, polyquaternium-11, polyquaternium-68, octylacrylamide / acrylates / butylaminoethyl methacrylate copolymer and acrylates copolymer.

[0022] According to the invention, the composition is preferably free of styling polymers. In particular, the composition is preferably free of molecules having polyethylene glycol subunits.

[0023] Surprisingly, it is noted that the composition according to the invention allows to provide a semi-solid or solid composition which does not show oil separation or precipitation. The degree of solids of the pure ingredients is lower than in combination.

[0024] The concentration of hydrogenated rapeseed oil in the hair styling composition of the present invention is preferably in the range of 0.1 to 12 wt %, more preferably in the range of 2.0 to 10 wt %, most preferably in the range of 3.7 to 8.0 wt %, based on the total weight of the composition.

[0025] White wax is also known as beeswax.

[0026] Preferably, the concentration of white wax and / or shea butter in the hair styling composition is in the range of 0.1 wt % to 15 wt %, more preferably in the range of 1.8 wt % to 9.5 wt %, most preferably in the range of 2.8 wt % to 5.5 wt %, based on the total weight of the composition.

[0027] For the preferred case containing both white wax and shea butter, the weight ratio of white wax to shea butter is preferably in the range of 10:1 to 1:10, more preferably 5:1 to 1:5, more preferably 2:1 to 1:2, more preferably 1.5:1 to 1:1.5, and most preferably 1.2:1 to 1:1.2.

[0028] In addition, the styling composition preferably further comprises vegetable oil. In the case of containing vegetable oil, the total amount of vegetable oil is preferably in the range of 10 wt % to 95 wt %, more preferably 15 wt % to 94 wt %, more preferably 25 wt % to 93 wt %, based on the total weight of the composition.

[0029] A preferred embodiment of the present invention is characterized in that the total amount of vegetable oil is in the range of 10 wt.-% to 50 wt.-%, more preferably 20 wt.-% to 40 wt.-%, more preferably 22.5 wt.-% to 35 wt.-%, based on the total weight of the composition.

[0030] More preferably, the styling composition further comprises isohexadecane. In the case of containing vegetable oil, the total amount of isohexadecane is preferably in the range of 5.0 wt % to 95 wt %, more preferably 10 wt % to 94 wt %, more preferably 12 wt % to 93 wt %, based on the total weight of the composition.

[0031] A preferred embodiment of the present invention is characterized in that the total amount of isohexadecane is in the range of 5.0 to 20 wt.-%, more preferably 8.0 to 15 wt.-%, more preferably 9.0 to 14 wt.-%, based on the total weight of the composition.

[0032] More preferably, the styling composition further comprises dicaprylyl ether. In the case of containing dicaprylyl ether, the total amount of dicaprylyl ether is preferably in the range of 5.0 wt % to 40 wt %, more preferably 10 wt % to 30 wt %, more preferably 15 wt % to 25 wt %, based on the total weight of the composition.

[0033] More preferably, the styling composition further comprises ethylhexyl stearate. In the case of containing ethylhexyl stearate, the total amount of ethylhexyl stearate is preferably in the range of 5.0 wt % to 30 wt %, more preferably 7.0 wt % to 20 wt %, more preferably 9.0 wt % to 15 wt %, based on the total weight of the composition.

[0034] It is also preferred if other oil compounds are also contained. A preferred oil compound is triolein. In the case of containing triolein, the total amount of triolein is preferably in the range of 0.5 wt % to 10 wt %, more preferably 3.0 wt % to 8.0 wt %, based on the total weight of the composition.

[0035] In addition, it is preferred to contain isoamyl laurate. When isoamyl laurate is contained, the total amount of isoamyl laurate is preferably in the range of 0.5 to 10 wt %, more preferably 3.0 to 8.0 wt %, based on the total weight of the composition.

[0036] In addition, it is preferred to contain other natural oils in a small amount, particularly in an amount of 0.5 to 5% by weight. Among the natural oils, olive fruit oil, castor seed oil, jojoba seed oil, camellia seed oil and / or sunflower seed oil are preferably contained.

[0037] Furthermore, it is preferred if the composition contains no emulsifiers.

[0038] The cosmetic compositions according to the invention are also preferably free of water-insoluble, non-volatile silicone compounds.

[0039] The term "water-insoluble" is used herein to mean that when 1 part by weight of a substance is dissolved in 99 parts by weight of water at 25°C, the solubility obtained is less than 50% by weight.

[0040] The composition according to the invention may also contain substances usually contained in hair styling compositions. These substances are, for example, UV filters, dyes, ubiquinones such as coenzyme Q10, vitamins, plant extracts, antioxidants such as oryzanol, and fragrances. DETAILED DESCRIPTION

[0041] Example:

[0042] The following examples illustrate the compositions of the present invention, but are not intended to limit the present invention to these examples. The values ​​in the examples are weight percentages based on the total weight of the formulation.

[0043] Examples 1 to 3 are reference examples. Examples 4 to 12 are examples according to the present invention.

[0044] The experimental values ​​shown in Table 1 were determined in the following manner:

[0045] The composition was heated to 80°C and then cooled to room temperature. Parameters were evaluated after 24 hours. Based on appearance, the composition compatibility was classified as unstable precipitated liquid or a stable homogeneous phase. The stable homogeneous phase composition was then evaluated by texture hardness penetration and oil separation after shear.

[0046] Use TA.XT / Plus texture analyzer to test texture hardness and penetration.

[0047] Stir the mixture five times with a spoon. Check the appearance for any oil separation.

[0048] It can be noted from Table 1 that for the examples according to the present invention, oil separation is avoided while forming solid or semi-solid compositions. Those compositions can be effectively used to provide a canned styling product that can be taken out with fingers. The formulations provide excellent styling properties even without styling polymers.

[0049]

[0050] Table 1 (continued)

[0051] INCI Embodiment 11 Example 12 Vegetable oil 30 30 Camellia Seed Oil 3 0 Isoamyl laurate 4 4 Dioctyl ether 17.3 20.3 Isohexadecane 15 15 Jojoba Seed Oil 5 5 Shea Butter 3.2 3.2 Ethylhexyl stearate 12 12 white wax 3.2 3.2 Hydrogenated Rapeseed Oil 7 7 essence 0.3 0.3

Claims

1. A water-free hair styling composition, comprising a) Hydrogenated rapeseed oil, b) White wax and / or shea butter.

2. The composition according to claim 1, characterized in that it does not contain styling polymers.

3. The composition according to claim 1 or 2, characterized in that it is free of PVP, VP / VA copolymer, polyquaternium-11, polyquaternium-68, octylacrylamide / acrylates / butylaminoethyl methacrylate copolymer and acrylates copolymer.

4. Composition according to claim 1 or 2, characterized in that it does not contain molecules comprising polyethylene glycol subunits.

5. The composition according to claim 1 or 2, characterized in that the concentration of hydrogenated rapeseed oil is 0.1% to 12% by weight, more preferably 2.0% to 10% by weight, most preferably 3.7% to 8.0% by weight, based on the total weight of the composition.

6. The composition according to claim 1 or 2, characterized in that the concentration of white wax and / or shea butter is 0.1% to 15% by weight, preferably 1.8% to 9.5% by weight, more preferably 2.8% to 5.5% by weight, based on the total weight of the composition.

7. A composition according to claim 1 or 2, characterised in that it contains both white wax and shea butter.

8. The composition according to claim 7, characterized in that the weight ratio between white wax and shea butter is from 10:1 to 1:10, more preferably from 5:1 to 1:5, more preferably from 2:1 to 1:2, more preferably from 1.5:1 to 1:1.5, most preferably from 1.2:1 to 1:1.

2.

9. The composition according to claim 1 or 2, characterized in that the composition further comprises a vegetable oil.

10. The composition according to claim 9, characterized in that the total amount of vegetable oil is from 10% to 95% by weight, more preferably from 15% to 94% by weight, more preferably from 25% to 93% by weight, based on the total weight of the composition.

11. The composition according to claim 9, characterized in that the total amount of vegetable oil is 10% to 50% by weight, more preferably 20% to 40% by weight, more preferably 22.5% to 35% by weight, based on the total weight of the composition.

12. The composition according to claim 1 or 2, characterized in that the styling composition also comprises isohexadecane.

13. The composition according to claim 12, characterized in that the total amount of isohexadecane is from 5.0% to 95% by weight, more preferably from 10% to 94% by weight, more preferably from 12% to 93% by weight, based on the total weight of the composition.

14. The composition according to claim 12, characterized in that the total amount of isohexadecane is from 5.0% to 20% by weight, more preferably from 8.0% to 15% by weight, more preferably from 9.0% to 14% by weight, based on the total weight of the composition.

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