Transparent hair cosmetic composition

Abstract

To provide a transparent hair cosmetic that maintains its appearance transparency while allowing for the imparting of texture with a small amount. [Solution] The transparent hair cosmetic composition contains (A) a polyether-modified silicone with an HLB value of 13 to 15, (B) a nonionic surfactant in an amount of 0.3% to 1.5% by mass, (C) a cationic surfactant, and (D) ethanol. The transparent hair cosmetic composition may also contain polyoxyethylene hydrogenated castor oil as component (B), at least one cationic surfactant selected from the group consisting of stearyltrimethylammonium chloride, cetostearyltrimethylammonium chloride, stearyltrimethylammonium bromide, and cetostearyltrimethylammonium bromide, and may further contain (E) a fragrance compound.

Description

Technical Field

[0001] The present invention relates to a transparent hair cosmetic composition.

Background Art

[0002] In recent years, hair cosmetic compositions in portable sizes have been widely sold on the market. Among them, spray-type hair mists can perfume hair with a small amount. Generally, in the field of hair cosmetic compositions, in order to impart a feeling such as smoothness and softness, silicone, cationic surfactants, oils, etc. are widely blended. Many of the above-mentioned components for imparting a feeling are oil-soluble, and when they are blended in an aqueous transparent hair cosmetic composition, there are concerns about transparency and stability, so an appropriate amount is blended. In the field of hair cosmetic compositions, a highly transparent appearance is often preferred, but it is difficult to combine an aqueous hair cosmetic composition with a transparent appearance and an aqueous hair cosmetic composition that can impart a feeling with a small amount, and they are currently sold as separate products.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention has been made in view of such a situation, and the problem thereof is to provide a transparent hair cosmetic that can impart a feeling with a small amount while maintaining the transparency of the appearance.

Means for Solving the Problems

[0005] As a result of diligent research to achieve the aforementioned objectives, we discovered that the objectives can be achieved by combining polyether-modified silicone, a nonionic surfactant, a cationic surfactant, and ethanol, and thus completed the present invention.

[0006] The transparent hair cosmetic composition according to the present invention contains (A) a polyether-modified silicone with an HLB value of 13 to 15, (B) a nonionic surfactant of 0.3% to 1.5% by mass, (C) a cationic surfactant, and (D) ethanol.

[0007] The transparent hair cosmetic composition according to the present invention maintains stable transparency in appearance and can impart texture with a small amount due to its composition.

[0008] The transparent hair cosmetic composition according to the present invention may also contain polyoxyethylene hydrogenated castor oil as component (B).

[0009] The transparent hair cosmetic composition according to the present invention can maintain its transparency in appearance more stably due to its composition.

[0010] The transparent hair cosmetic composition according to the present invention may have component (C) as at least one cationic surfactant selected from the group consisting of stearyltrimethylammonium chloride, cetostearyltrimethylammonium chloride, stearyltrimethylammonium bromide, and cetostearyltrimethylammonium bromide.

[0011] The transparent hair cosmetic composition according to the present invention, with its configuration, can further improve the flexibility and conditioning properties of hair.

[0012] The transparent hair cosmetic composition according to the present invention may further contain (E) a fragrance compound.

[0013] The transparent hair cosmetic composition according to the present invention maintains stable transparency in appearance, provides a pleasant texture with a small amount, and allows for fragrance application to the hair. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a transparent hair cosmetic that maintains stable transparency in appearance while also providing a tactile sensation even in small amounts. [Brief explanation of the drawing]

[0015] [Figure 1] This figure shows that the slipperiness of the hair bundle coated with the sample from Example 1 was improved. [Modes for carrying out the invention]

[0016] The embodiments of the present invention will be described in detail below, but the present invention is not limited to the embodiments described below. The present invention is not limited to the configurations described below, and various modifications are possible within the scope of the claims, and embodiments and examples obtained by appropriately combining the technical means disclosed in different embodiments and examples are also included in the technical scope of the present invention. Furthermore, unless otherwise specified in this specification, "A to B" representing a numerical range means "greater than or equal to A and less than or equal to B".

[0017] Furthermore, in this specification, "transparent" means that it can be qualitatively determined by visual inspection. Specifically, "transparent" is defined as a state in which 100g of the sample is filled into a sample bottle (NDDY bottle: manufactured by Kowa Glass Co., Ltd.), left to stand at 0°C for 48 hours or more, and 8-point letters placed behind the sample bottle can be visually read, and the sample does not exhibit a bluish-white color.

[0018] Furthermore, in this specification, "imparting texture" means giving the hair to which the composition has been applied slipperiness and flexibility, thereby improving the feel of the hair.

[0019] The transparent hair cosmetic composition according to this embodiment contains (A) a polyether-modified silicone with an HLB value of 13 to 15, (B) a nonionic surfactant, (C) a cationic surfactant, and (D) ethanol.

[0020] <(A) Polyether-modified silicone with an HLB value of 13 to 15> The component (A) used in the transparent hair cosmetic composition according to this embodiment is a polyether-modified silicone with an HLB value of 13 to 15, which improves the sliding friction of hair. Examples of the polyether-modified silicone with an HLB of 13 to 15 include polyoxyethylene·methylpolysiloxane copolymer. Specific commercially available products include KF-6011 (manufactured by Shin-Etsu Chemical Co., Ltd.), SS-2801, SS-2802, SS-2804 (all manufactured by Toray Dow Corning Co., Ltd.), etc.

[0021] The polyether-modified silicone can be used alone or in combination of two or more kinds, and its blending amount is preferably 0.1% to 5% (hereinafter, mass% may be simply described as %). By setting the blending amount of the polyether-modified silicone to 0.1% or more, a smooth feeling can be sufficiently obtained. Also, if the content of the component (A) is 5% or less, stickiness can be sufficiently suppressed.

[0022] <(B) Nonionic surfactant> The component (B) used in the transparent hair cosmetic composition according to this embodiment is a nonionic surfactant, which is mainly used for solubilizing oil-soluble components. Examples of the nonionic surfactant as the component (B) include polyoxyalkylene alkyl ether, polyoxyalkylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, sucrose fatty acid ester, sorbitan fatty acid ester, glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, polyether-modified silicone, alkylamine oxide, etc. Among these, from the viewpoint of solubilizing power, polyoxyethylene sorbitan fatty acid ester and polyoxyethylene hydrogenated castor oil are preferred.

[0023] In the transparent hair cosmetic composition according to the present embodiment, the nonionic surfactant as the component (B) may be used alone or in combination of two or more. The blending amount of these nonionic surfactants is 0.3% by mass to 1.5% by mass in the transparent hair cosmetic composition according to the present embodiment. Within this blending amount range, the oil-soluble components can be solubilized without impairing the feel, and a transparent appearance can be maintained even at low temperatures. In the present specification, "low temperature" means a temperature lower than room temperature (25°C), for example, a temperature of 0°C or lower.

[0024] <(C) Cationic surfactant having at least one linear alkyl group having 18 carbon atoms> The component (C) used in the transparent hair cosmetic composition according to the present embodiment is a cationic surfactant, which improves the flexibility and conditioning property of hair. The cationic surfactant is not particularly limited as long as it can improve the flexibility and conditioning property of hair. For example, stearyltrimethylammonium chloride, cetostearyltrimethylammonium chloride, stearyltrimethylammonium bromide, cetostearyltrimethylammonium bromide, etc. can be mentioned, and preferably, stearyltrimethylammonium chloride.

[0025] In the transparent hair cosmetic composition according to the present embodiment, the cationic surfactant as the component (C) may be used alone or in combination of two or more. The blending amount of these cationic surfactants is preferably 0.1% by mass to 5% by mass in the transparent hair cosmetic composition according to the present embodiment, and more preferably 0.3% by mass to 1% by mass. If the blending amount of the cationic surfactant is 0.1% by mass or more, the smoothness when passing fingers through hair can be made good. Also, if the blending amount of the cationic surfactant is 5% by mass or less, excessive adsorption of the cationic surfactant to hair can be suppressed, and the feel imparted can be made good.

[0026] <(D) Ethanol> Component (D) used in the transparent hair cosmetic composition according to this embodiment is ethanol. The amount of ethanol in the transparent hair cosmetic composition according to this embodiment is preferably 20% to 60% by mass, more preferably 30% to 50% by mass. If the amount of ethanol is 20% by mass or more, the clouding of the transparent hair cosmetic composition is suppressed, and if it is 60% by mass or less, the odor derived from ethanol in the transparent hair cosmetic composition can be suppressed, preventing discomfort to the user.

[0027] The transparent hair cosmetic composition according to this embodiment contains (A) a polyether-modified silicone with an HLB value of 13 to 15, (B) a nonionic surfactant in an amount of 0.5% to 1.5% by mass in the transparent hair cosmetic composition, (C) a cationic surfactant, and (D) ethanol, thereby enabling the imparting of texture with a small amount while maintaining stable transparency in appearance.

[0028] Furthermore, the appearance of the transparent hair cosmetic composition according to this embodiment is transparent. Because it is transparent, there is no need to restrict the design of the product container in which the composition is filled, and a variety of designs, including transparent containers, can be adopted.

[0029] <(E) Fragrance> The transparent hair cosmetic composition according to this embodiment may optionally contain a fragrance compound as component (E). Synthetic fragrances or natural fragrances can be used as the fragrance compound. Including a fragrance compound in the transparent hair cosmetic composition allows for fragrance application to the hair when the composition is used. In the transparent hair cosmetic composition according to this embodiment, the amount of fragrance compound is preferably 0.3% to 1.5% by mass, more preferably 0.5% to 1.0% by mass, from the viewpoint of a moderately strong and long-lasting fragrance.

[0030] The transparent hair cosmetic composition according to this embodiment is not limited in terms of whether it is aqueous or oil-based, as long as its appearance is transparent, but it is preferably an aqueous transparent hair cosmetic composition.

[0031] In addition to the above-mentioned components, the transparent hair cosmetic composition according to this embodiment may optionally contain other components commonly used in hair cosmetic compositions, such as other surfactants, polymer compounds, oils and fats, powders, silicones, pH adjusters, humectants, UV absorbers, UV dispersants, pigments, liquid alcohols, plant extracts, bactericides, preservatives, antioxidants, chelating agents, pharmaceuticals, fragrances, etc., to the extent that they do not impair the effects of the present invention. [Examples]

[0032] The present invention will be specifically described below with reference to examples, but the scope of the invention is not limited by these examples. The following describes test methods for the transparency at low temperatures and hair manageability of the transparent hair cosmetic compositions described in the examples and comparative examples.

[0033] (Transparency at low temperatures) The evaluators visually observed each sample in a room kept at 0°C to confirm its transparency. The evaluation criteria were as follows:

[0034] ○: The 8-point lettering placed behind the sample bottle is legible to the naked eye, and the bulk material does not have a bluish tint. ×: It is cloudy.

[0035] (Hair manageability) The ease of handling the hair was assessed by the evaluator running their fingers through a hair bundle (BS-B3A, manufactured by Beaulax) with an appropriate amount of the sample from Example 1 applied at room temperature, and an unapplied hair bundle, to determine the difference in feel. The evaluator then checked whether the difference between the hair bundle with the sample applied and the unapplied hair bundle was equivalent to the standard. The evaluation criteria are as follows. The composition of Example 1 and each sample is shown in Table 1 below.

[0036] ○: Possesses a smoothness equivalent to the standard. ×: Clearly not as smooth as the standard.

[0037] (Slipperiness evaluation) The slipperiness was evaluated using the sample from Example 1. The slipperiness was evaluated by measuring the coefficient of dynamic friction (MIU value) of hair bundles coated with an appropriate amount of the sample from Example 1 and uncoated hair bundles using a friction tester (KES-SE type, manufactured by Kato Tech Co., Ltd.). The results are shown in Figure 1. Figure 1 shows that the slipperiness was improved in the hair bundles coated with the sample from Example 1.

[0038] [Table 1] (Note 1) Product name: Silicone KF-6011, manufactured by Shin-Etsu Chemical Co., Ltd. (Note 2) Product name: Silicone SS-2804, manufactured by Toray Dow Corning Co., Ltd.

[0039] As is clear from Table 1, Examples 1-4 all showed excellent performance. On the other hand, Comparative Examples 1-3 were inferior in either transparency at low temperatures or hair manageability.

Claims

1. A transparent hair cosmetic composition characterized by containing the following ingredients (A) to (D). (A) Polyether-modified silicone with an HLB value of 13-15 (B) Nonionic surfactant 0.3% to 1.5% by mass (C) Cationic surfactant (D) Ethanol

2. The transparent hair cosmetic composition according to claim 1, wherein component (B) is polyoxyethylene hydrogenated castor oil.

3. The transparent hair cosmetic composition according to claim 1 or 2, wherein component (C) is at least one cationic surfactant selected from the group consisting of stearyltrimethylammonium chloride, cetostearyltrimethylammonium chloride, stearyltrimethylammonium bromide, and cetostearyltrimethylammonium bromide.

4. The transparent hair cosmetic composition according to claim 1 or 2, further comprising component (E) a fragrance compound.

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