Disposable hair dyeing spray and methods of making and using same

Abstract

The present application provides a disposable hair dyeing spray and its preparation method and use method. The preparation raw material of the hair dyeing spray includes 5-12 parts of film forming agent, 3-15 parts of conditioning agent, 10-30 parts of dispersing agent, 1-5 parts of colorant and 45-75 parts of propellant. The film forming agent includes acrylic copolymer and acrylate-polysiloxane copolymer and the weight ratio of the two is 1-4:5-10. The conditioning agent includes siloxane compound. The dispersing agent includes alcohol compound and C 10 ~C 18 long chain alkane and the weight ratio of the two is 1:1.5-4.0. The alcohol compound includes lower fatty alcohol and / or polyhydric alcohol compound. The propellant includes substituted or unsubstituted C2-C6 lower alkane. The disposable hair dyeing spray can be quickly dried and keep certain setting and elasticity effect, so as to quickly change the original hair color and achieve the fashion styling effect as one wishes.

Description

Technical Field

[0001] This invention relates to the field of cosmetic technology, and more particularly to a hair dyeing product, and even more particularly to a disposable hair dye spray and its preparation and application methods. Background Technology

[0002] Hair dyeing products change the appearance of hair color and mainly include temporary, semi-permanent, and permanent dyeing. Young people prefer to change their hair color anytime, anywhere. With changing fashion trends, more and more people choose one-time temporary hair dyeing products, which allow them to choose any color and can be washed off quickly without affecting their original hair quality or color or damaging the hair structure. Therefore, one-time hair dyeing products are popular among young people as a temporary hair dyeing method.

[0003] The main principle of temporary hair dye products is to use a film-forming agent to create a film on the hair surface, adhering the colorant to the hair and covering the original hair color. However, while there are many temporary hair dye products on the market, the resulting film is often weak and brittle. After adhering to the hair surface, it makes the hair lose elasticity and affects its appearance and texture. Furthermore, its water resistance is poor. Additionally, topical hair dye products are prone to uneven application and are inconvenient to use. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a disposable hair dye spray, its preparation method, and its usage method. This disposable hair dye spray dries quickly and maintains a certain level of hold and elasticity, thus allowing for rapid changes in hair color to achieve desired fashionable styling. Furthermore, it is convenient to use, uses mild, safe, and non-toxic ingredients, has minimal skin irritation, avoids the carcinogenic risks associated with chemical hair dyes, and allows for easy restoration of the original hair color.

[0005] To achieve the above objectives, the first aspect of the present invention provides a disposable hair dye spray, comprising, by weight, 5-12 parts of a film-forming agent, 3-15 parts of a conditioning agent, 10-30 parts of a dispersant, 1-5 parts of a colorant, and 45-75 parts of a propellant. The film-forming agent comprises acrylate copolymers and acrylate-polysiloxane copolymers, wherein the weight ratio of the acrylate copolymers to the acrylate-polysiloxane copolymers is 1-4:5-10. The conditioning agent comprises siloxane compounds, and the dispersant comprises alcohol compounds and C... 10 ~C 18 Long-chain alkanes, the alcohols and the C 10 ~C 18The weight ratio of long-chain alkanes is 1:1.5 to 4.0, the alcohols include lower fatty alcohols and / or polyols, and the propellant includes substituted or unsubstituted C2 to C6 lower alkanes.

[0006] The raw materials for preparing the hair dye spray of this invention include a film-forming agent, a conditioning agent, a dispersant, a colorant, and a propellant. The film-forming agent includes acrylic (ester) copolymers and acrylic-polysiloxane copolymers; the combination of these two provides better styling and film-forming effects, forming a double-layered, water-resistant, and color-fixing film on the hair surface, exhibiting excellent elasticity and toughness, thus maintaining a certain level of styling and elasticity. Furthermore, the acrylic (ester) copolymers improve product stability, and the film they form on the hair surface can slow down moisture loss, thereby providing a certain degree of moisturizing effect. The high content of acrylic-polysiloxane copolymers enhances the product's lubricity, and their hydrophobicity further enhances the moisturizing effect while providing better waterproof performance. The dispersant includes alcohol compounds and C... 10 ~C 18 Long-chain alkanes, and alcohols including lower fatty alcohols and / or polyols, wherein C 10 ~C 18 Long-chain alkanes facilitate the dispersion of film-forming agents such as acrylate copolymers and acrylate-polysiloxane copolymers, while lower fatty alcohols and / or polyols facilitate the dispersion of colorants and siloxane compounds. Products using low levels of alcohols are mild, safe, non-toxic, and have low skin irritation. The combination of dispersants, film-forming agents, and conditioning agents allows for quick drying and styling after application, enabling rapid changes in hair color to achieve desired fashionable looks. Using substituted or unsubstituted C2-C6 lower alkanes as propellants allows for the production of aerosol spray products. These products feature unique packaging, are easy to use, and can be applied as needed, for both localized and full-head hair coloring. The raw materials used in the preparation of this hair dye spray are mild, safe, and non-toxic, with low skin irritation, avoiding the carcinogenic risks associated with chemical hair dyes. Furthermore, it is a one-time use dye, allowing users to choose different colors according to personal preference, and is easy to wash out, restoring the original hair color at any time.

[0007] As a technical solution of the present invention, the acrylate copolymer is selected from acrylic acid / acrylate copolymer, methyl acrylate / methyl methacrylate copolymer, methacrylic acid / ethyl acrylate copolymer, acrylate / C 12 -C 22 Alkyl methacrylate copolymers and acrylates / C 10 -C 30 At least one of the alkanol acrylate crosspolymers.

[0008] As a technical solution of the present invention, the acrylate-polysiloxane copolymer is selected from acrylate / polydimethylsiloxane methacrylate copolymer and / or acrylate / propyl polytrimethylsiloxane methacrylate copolymer.

[0009] As a technical solution of the present invention, the siloxane compound is selected from at least one of disiloxane, trisiloxane, polydimethylsiloxane, octyl polymethylsiloxane, methyl polytrimethylsiloxane and cyclopentadimethylsiloxane.

[0010] As a technical solution of the present invention, the conditioning agent further includes silica, wherein the content of silica in the preparation raw materials is ≤1.0 wt.%.

[0011] As a technical solution of the present invention, the alcohol compound is selected from at least one of ethanol, propanol, propylene glycol, butanediol and dipropylene glycol.

[0012] As a technical solution of the present invention, the C 10 ~C 18 The long-chain alkane is selected from at least one of isododecane, isodecanane, isohexadecanane, and n-dodecane.

[0013] As a technical solution of the present invention, the substituted or unsubstituted C2~C6 lower alkanes are selected from at least one of butane, isobutane, propane and 1,1-difluoroethane.

[0014] As a technical solution of the present invention, the colorant is selected from at least one of mica, tin oxide colorants, titanium oxide colorants, oil-soluble synthetic pigments, Prussian colorants, and azo colorants.

[0015] A second aspect of the present invention provides a method for preparing a disposable hair dye spray, comprising the steps of: S1, the acrylate-polysiloxane copolymer and the C 10 ~C 18 After mixing the long-chain alkanes, the acrylic (ester) copolymer is added to obtain mixture A; S2, after homogenizing the colorant, the conditioning agent and the alcohol compound, a mixture B is obtained; S3, mix the mixture A and the mixture B to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with the propellant.

[0016] Through C 10 ~C 18 Long-chain alkanes disperse acrylic (ester) copolymers and acrylate-polysiloxane copolymers, while alcohol compounds disperse colorants and siloxane compounds. Propellants can be used to disperse C...10 ~C 18 This is a one-time hair dye spray made from long-chain alkanes, alcohols, acrylic (ester) copolymers, acrylic ester-polysiloxane copolymers, and conditioning agents. It is easy to use and can quickly change the original hair color to achieve a fashionable look that you can do as you please.

[0017] The third aspect of the present invention provides a method for using the aforementioned disposable hair dye spray, comprising the steps of: shaking the disposable hair dye spray, spraying the hair at a distance of 15-25cm, and allowing it to dry completely after 1-3 minutes to complete the hair dyeing process. Detailed Implementation

[0018] The hair dye spray of this invention is for single use. When using it, shake the spray and spray it onto the hair from a distance of 15-25cm. Allow it to dry completely in 1-3 minutes to complete the dyeing process. It is not suitable for spot spraying; multiple applications can be made as needed.

[0019] The raw materials for preparing the hair dye spray of the present invention (by weight) include 5-12 parts of film-forming agent, 3-15 parts of conditioning agent, 10-30 parts of dispersant, 1-5 parts of colorant and 45-75 parts of propellant.

[0020] The film-forming agent may be, but is not limited to, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, or 12 parts. The film-forming agent includes acrylate copolymers and acrylate-polysiloxane copolymers, with a weight ratio of acrylate copolymer to acrylate-polysiloxane copolymer of 1~4:5~10. For example, the weight ratio may be, but is not limited to, 1:5, 1:6, 1:7, 1:8, 1:9, 1:10, 2:5, 2:6, 2:7, 2:8, 2:9, 3:5, 3:6, 3:7, 3:8, 3:9, 4:5, 4:6, 4:7, or 4:9. The acrylate copolymer is selected from acrylate / acrylate copolymers, methyl acrylate / methyl methacrylate copolymers, methacrylic acid / ethyl acrylate copolymers, and acrylate / C... 12 -C 22 Alkyl methacrylate copolymers and acrylates / C 10 -C 30 At least one of the alkanol acrylate crosslinking polymers. The acrylate-polysiloxane copolymer is selected from acrylate / polydimethylsiloxane methacrylate copolymers and / or acrylate / propyltrimethylsiloxane methacrylate copolymers.

[0021] The conditioning agent may be, but is not limited to, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, or 15 parts. The conditioning agent includes siloxane compounds, selected from at least one of disiloxane, trisiloxane, polydimethylsiloxane, octyl polymethylsiloxane, methyl polytrimethylsiloxane, and cyclopentadimethylsiloxane. Further, the conditioning agent also includes silica, with the silica content in the raw materials ≤1.0 wt.%. The silica content in the raw materials may be, but is not limited to, 1.0 wt.%, 0.9 wt.%, 0.8 wt.%, 0.7 wt.%, 0.6 wt.%, 0.5 wt.%, 0.4 wt.%, 0.3 wt.%, 0.2 wt.%, or 0.1 wt.%.

[0022] The dispersant may be, but is not limited to, 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, or 30 parts. The dispersant includes alcohol compounds and C... 10 ~C 18 Long-chain alkanes. Alcohols and C 10 ~C 18 The weight ratio of long-chain alkanes is 1:1.5 to 4.0. Alcohols include lower fatty alcohols and / or polyols. Lower fatty alcohols are selected from ethanol or propanol. Polyols are selected from at least one of propylene glycol, butanediol, and dipropylene glycol. C 10 ~C 18 The long-chain alkane is selected from at least one of isododecane, isodecanane, isohexadecanane, and n-dodecane.

[0023] The colorant may be, but is not limited to, 1 part, 2 parts, 3 parts, 4 parts, or 5 parts. The colorant is selected from at least one of mica, tin oxide colorants, titanium oxide colorants, oil-soluble synthetic pigments, Prussian colorants, and azo colorants. Further, the mica may be pure mica or synthetic fluorophlogopite. The color of the colorant may be selected according to requirements; for example, it may be at least one of CI 15985, CI 45410, CI 77491, CI 77492, CI 77499, CI 77510, CI 77861, and CI77891.

[0024] The propellant may be, but is not limited to, 45 parts, 47 parts, 50 parts, 52 parts, 55 parts, 57 parts, 60 parts, 62 parts, 65 parts, 67 parts, 70 parts, 72 parts, or 75 parts. The propellant includes substituted or unsubstituted C2-C6 lower alkanes. The substituted or unsubstituted C2-C6 lower alkanes are selected from at least one of butane, isobutane, propane, and 1,1-difluoroethane.

[0025] The preparation method of this hair dye spray may include the following steps: S1, acrylate-polysiloxane copolymer and C 10 ~C 18 After mixing long-chain alkanes, acrylic (ester) copolymers are added and mixed to obtain mixture A; S2, after homogenizing the colorant, conditioning agent and alcohol compound, a mixture B is obtained; S3, mix mixture A and mixture B to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with the propellant.

[0026] Furthermore, the mixing speed can be 25~50 rpm, and the homogenization speed can be 2500~4500 rpm.

[0027] To better illustrate the purpose, technical solution, and beneficial effects of this invention, the invention will be further described below with reference to specific embodiments. It should be noted that the methods described below are further explanations of this invention and should not be construed as limiting the invention. The raw materials involved in the embodiments are commercially available.

[0028] Example 1 This embodiment is a disposable hair dye spray. By weight, the raw materials include 3.0g acrylic acid / acrylate copolymer, 5.0g acrylate / polydimethylsiloxane methacrylate copolymer, 5.0g dimersiloxane, 3.5g trisiloxane, 0.5g silica, 5.0g ethanol, 10.0g isododecane, 1.0g CI 77499, 0.5g CI 77492, 0.2g CI 77491, 0.4g synthetic fluorophlogopite, 28.0g butane, 23.0g isobutane, and 14.5g propane.

[0029] The preparation method of this disposable hair dye spray includes the following steps: S1, add acrylate / polydimethylsiloxane methacrylate copolymer to isododecane, stir until dissolved and transparent, then add acrylate / acrylate copolymer and stir at 35 rpm to disperse evenly to obtain mixture A; S2, CI 77499, CI 77492, CI 77491, synthetic fluorophlogopite, disiloxane, trisiloxane, silica and ethanol were homogenized at 3500 rpm to obtain mixture B. S3, mix mixture A and mixture B at 30 rpm to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with butane, isobutane and propane.

[0030] Example 2 This embodiment is a disposable hair dye spray. By weight, the raw materials include 3.0g acrylic acid / acrylate copolymer, 7.0g acrylate / polydimethylsiloxane methacrylate copolymer, 4.3g dimersiloxane, 4.0g trisiloxane, 0.7g silica, 8.0g ethanol, 15.0g isododecane, 0.5g CI 77499, 0.2g CI 77492, 0.3g CI 77491, 0.5g synthetic fluorophlogopite, 25.0g butane, 21.0g isobutane, and 8.5g propane.

[0031] The preparation method of this disposable hair dye spray includes the following steps: S1, add acrylate / polydimethylsiloxane methacrylate copolymer to isododecane, stir until dissolved and transparent, then add acrylate / acrylate copolymer and stir at 30 rpm to disperse evenly to obtain mixture A; S2, CI 77499, CI 77492, CI 77491, synthetic fluorophlogopite, disiloxane, trisiloxane, silica and ethanol were homogenized at 4000 rpm to obtain mixture B. S3, mix mixture A and mixture B at 35 rpm to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with butane, isobutane and propane.

[0032] Example 3 This embodiment is a disposable hair dye spray. By weight, the raw materials include 3.0g methacrylic acid / ethyl acrylate copolymer, 5.0g acrylate / propyl polytrimethylsiloxane methacrylate copolymer, 5.0g dimersiloxane, 4.0g methyl polytrimethylsiloxane, 0.5g silica, 2.0g isobutanol, 3.0g propylene glycol, 10.0g isohexadecane, 1.0g CI 77499, 0.4g CI 77492, 0.2g CI 77491, 0.4g synthetic fluorophlogopite, 31.0g butane, 20.0g 1,1-difluoroethane, and 14.5g propane.

[0033] The preparation method of this disposable hair dye spray includes the following steps: S1, add acrylate / propyl polytrimethylsiloxane methacrylate copolymer to isohexadecane, stir until dissolved and transparent, then add methacrylic acid / ethyl acrylate copolymer and stir at 35 rpm to disperse evenly to obtain mixture A; S2, CI 77499, CI 77492, CI 77491, synthetic fluorophlogopite, disiloxane, methyl polytrimethylsiloxane, silica, isobutanol and propylene glycol were homogenized at 3500 rpm to obtain mixture B. S3, mix mixture A and mixture B at 30 rpm to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with butane, 1,1-difluoroethane and propane.

[0034] Example 4 This embodiment is a disposable hair dye spray. By weight, the raw materials include 3.0g acrylic acid / acrylate copolymer, 5.0g acrylate / polydimethylsiloxane methacrylate copolymer, 8.5g dimersiloxane, 0.8g silica, 3.0g ethanol, 2.0g butanediol, 6.0g isododecane, 4.0g isohexadecane, 1.0g CI 77499, 0.7g CI77492, 0.5g CI 77491, 28.0g butane, 23.0g ethane, and 14.5g propane.

[0035] The preparation method of this disposable hair dye spray includes the following steps: S1, add acrylate / polydimethylsiloxane methacrylate copolymer to isododecane and isohexadecane, stir until dissolved and transparent, then add acrylate / acrylate copolymer and stir at 35 rpm to disperse evenly to obtain mixture A; S2, after homogenizing CI 77499, CI 77492, CI 77491, disiloxane, silica, ethanol and butanediol at 3500 rpm, mixture B is obtained; S3, mix mixture A and mixture B at 30 rpm to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with butane, ethane and propane.

[0036] Example 5 This embodiment is a disposable hair dye spray. By weight, the raw materials include 3.0g acrylic acid / acrylate copolymer, 5.0g acrylate / polydimethylsiloxane methacrylate copolymer, 5.0g dimersiloxane, 4.0g trisiloxane, 5.0g ethanol, 10.0g isododecane, 1.0g CI 77499, 0.5g CI 77492, 0.2g CI77491, 0.4g synthetic fluorophlogopite, 28.0g butane, 23.0g isobutane, and 14.5g propane.

[0037] The preparation method of this disposable hair dye spray includes the following steps: S1, add acrylate / polydimethylsiloxane methacrylate copolymer to isododecane, stir until dissolved and transparent, then add acrylate / acrylate copolymer and stir at 35 rpm to disperse evenly to obtain mixture A; S2, CI 77499, CI 77492, CI 77491, synthetic fluorophlogopite, disiloxane, trisiloxane and ethanol were homogenized at 3500 rpm to obtain mixture B; S3, mix mixture A and mixture B at 30 rpm to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with butane, isobutane and propane.

[0038] Comparative Example 1 This comparative example is a disposable hair dye spray. By weight, the raw materials used in its preparation include 8.0g acrylic acid / acrylate copolymer, 5.0g dimersiloxane, 3.5g trisiloxane, 0.5g silica, 5.0g ethanol, 10.0g isododecane, 1.0g CI 77499, 0.5g CI 77492, 0.2g CI 77491, 0.4g synthetic fluorophlogopite, 28.0g butane, 23.0g isobutane, and 14.5g propane.

[0039] The preparation method of this disposable hair dye spray includes the following steps: S1, add the acrylic acid / acrylate copolymer to isododecane and stir at 35 rpm to disperse it evenly to obtain mixture A; S2, CI 77499, CI 77492, CI 77491, synthetic fluorophlogopite, disiloxane, trisiloxane, silica and ethanol were homogenized at 3500 rpm to obtain mixture B. S3, mix mixture A and mixture B at 30 rpm to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with butane, isobutane and propane.

[0040] Comparative Example 2 This comparative example is a disposable hair dye spray. By weight, the raw materials include 8.0g of acrylate / polydimethylsiloxane methacrylate copolymer, 5.0g of dimersiloxane, 3.5g of trisiloxane, 0.5g of silica, 5.0g of ethanol, 10.0g of isododecane, 1.0g of CI 77499, 0.5g of CI 77492, 0.2g of CI 77491, 0.4g of synthetic fluorophlogopite, 28.0g of butane, 23.0g of isobutane, and 14.5g of propane.

[0041] The preparation method of this disposable hair dye spray includes the following steps: S1, add acrylate / polydimethylsiloxane methacrylate copolymer to isododecane and stir at 35 rpm to disperse evenly to obtain mixture A; S2, CI 77499, CI 77492, CI 77491, synthetic fluorophlogopite, disiloxane, trisiloxane, silica and ethanol were homogenized at 3500 rpm to obtain mixture B. S3, mix mixture A and mixture B at 30 rpm to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with butane, isobutane and propane.

[0042] Comparative Example 3 This comparative example is a disposable hair dye spray. By weight, the raw materials include 5.0g acrylic acid / acrylate copolymer, 3.0g acrylate / polydimethylsiloxane methacrylate copolymer, 5.0g dimersiloxane, 3.5g trisiloxane, 0.5g silica, 5.0g ethanol, 10.0g isododecane, 1.0g CI 77499, 0.5g CI 77492, 0.2g CI 77491, 0.4g synthetic fluorophlogopite, 28.0g butane, 23.0g isobutane, and 14.5g propane.

[0043] The preparation method of this disposable hair dye spray includes the following steps: S1, add acrylate / polydimethylsiloxane methacrylate copolymer to isododecane, stir until dissolved and transparent, then add acrylate / acrylate copolymer and stir at 35 rpm to disperse evenly to obtain mixture A; S2, CI 77499, CI 77492, CI 77491, synthetic fluorophlogopite, disiloxane, trisiloxane, silica and ethanol were homogenized at 3500 rpm to obtain mixture B. S3, mix mixture A and mixture B at 30 rpm to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with butane, isobutane and propane.

[0044] Comparative Example 4 This comparative example is a disposable hair dye spray. By weight, the raw materials used in its preparation include 3.0g acrylic acid / acrylate copolymer, 5.0g acrylate / polydimethylsiloxane methacrylate copolymer, 5.0g ethanol, 10.0g isododecane, 1.0g CI 77499, 0.5g CI 77492, 0.2g CI 77491, 0.4g synthetic fluorophlogopite, 30.0g butane, 26.0g isobutane, and 18.9g propane.

[0045] The preparation method of this disposable hair dye spray includes the following steps: S1, add acrylate / polydimethylsiloxane methacrylate copolymer to isododecane, stir until dissolved and transparent, then add acrylate / acrylate copolymer and stir at 35 rpm to disperse evenly to obtain mixture A; S2, CI 77499, CI 77492, CI 77491, synthetic fluorophlogopite and ethanol were homogenized at 3500 rpm to obtain mixture B; S3, mix mixture A and mixture B at 30 rpm to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with butane, isobutane and propane.

[0046] Comparative Example 5 This comparative example is a disposable hair dye spray. By weight, the raw materials used in its preparation include 3.0g acrylic acid / acrylate copolymer, 5.0g acrylate / polydimethylsiloxane methacrylate copolymer, 5.0g dimersiloxane, 3.5g trisiloxane, 0.5g silica, 15.0g ethanol, 1.0g CI 77499, 0.5g CI 77492, 0.2g CI 77491, 0.4g synthetic fluorophlogopite, 28.0g butane, 23.0g isobutane, and 14.5g propane.

[0047] The preparation method of this disposable hair dye spray includes the following steps: S1, a mixture is obtained by homogenizing acrylate / polydimethylsiloxane methacrylate copolymer, acrylic acid / acrylate copolymer, CI 77499, CI 77492, CI 77491, synthetic fluorophlogopite, disiloxane, trisiloxane, silica and ethanol at a speed of 3500 rpm. S2, after bottling and sealing the mixture, fill it with butane, isobutane and propane.

[0048] The disposable hair dye sprays of Examples 1-5 and Comparative Examples 1-5 were subjected to relevant performance tests.

[0049] (a) Safety testing (using human skin patch test) (1) Test substance Examples 1-5 and Comparative Examples 1-5: Disposable hair dye sprays.

[0050] (2) Subject population Number: 38 people.

[0051] Age: 20-52 years old.

[0052] Gender: 31 females and 7 males.

[0053] Health status: Subjects have healthy skin, no history of skin diseases or allergies, and meet the criteria for voluntary inclusion in the subject selection process.

[0054] (3) Patch test method A qualified patch tester was selected, and the test was conducted using a closed patch test method. Approximately 0.025 mL of the test substance was dropped into the patch tester, and the patch was then applied to the inside of the subject's upper arm with special adhesive tape. The test substance was removed after 24 hours, and the skin reaction was observed at 0.5 hours, 6 hours, 12 hours, 24 hours, and 48 hours after removal. The test results were recorded according to the skin reaction grading standards in the "Cosmetic Hygiene Standard 2007 Edition".

[0055] (4) Experimental results Human skin patch test results showed that after the hair dye spray patch test on 38 subjects, only 3 cases of slight redness and swelling occurred in Comparative Example 5 after 0.5h, 6h, 12h, 24h, and 48h, indicating that the hair dye spray of the present invention is safe to use, while the large amount of alcohol compounds added may cause some irritation.

[0056] (II) Evaluation Test of the Quick-drying Effect and Water Resistance of Hair Dye Spray (1) Test substance Examples 1-5 and Comparative Examples 1-5: Disposable hair dye sprays.

[0057] (2) Number of subjects Number: Female, 50 people.

[0058] Age: 20-50 years old.

[0059] Health status: Subjects have healthy skin, no history of skin diseases or allergies, and meet the criteria for voluntary inclusion in the subject selection process.

[0060] (3) Test method Subjects applied the disposable hair dye sprays from Examples 1-5 and Comparative Examples 1-3 to their hair for dyeing, and then underwent quick-drying and water-resistant tests.

[0061] 1) Quick-drying test: Spray the same amount of different samples onto the hair, record the drying time, and score them.

[0062] 2) Water resistance test: After spraying hair dye spray, spray a certain amount of water on the head. After 0.5 hours, rub the hair with your hands, record the amount of dye powder that falls off, and score it.

[0063] After conducting quick-drying and water-resistant tests, its effectiveness and user experience are evaluated and scored.

[0064] The scoring system is based on a 5-point scale, with 5 points being the best, 4 points being good, 3 points being average, and 0 points being the worst. The higher the score, the better the effect.

[0065] Table 1. Quick-drying effect and water resistance test results

[0066] Note: The quick-drying and water-resistant tests of the spray, as well as the overall performance, are all average values ​​from the tests conducted on all subjects.

[0067] As shown in Table 1, the film-forming agents include acrylic (ester) copolymers and acrylic ester-polysiloxane copolymers, and the two are maintained at a certain content ratio, which can dry quickly and have a certain water-resistant effect.

[0068] (III) Sensory evaluation test of hair dye spray Subjects applied the disposable hair dye sprays from Examples 1-5 and Comparative Examples 1-3 to their hair for coloring, and then conducted a sensory evaluation test. The effectiveness and user experience were evaluated and scored.

[0069] The scoring system is based on a 5-point scale, with 5 points being the best, 4 points being good, 3 points being average, and 0 points being the worst. The higher the score, the better the effect.

[0070] Table 2 Results of Sensory Evaluation Test

[0071] Note: Sensory perception is based on the average of all subjects' tests.

[0072] As shown in Table 2, using siloxane compounds as conditioners, alcohol compounds and C... 10 ~C 18 Using long-chain alkanes as dispersants, hair dye sprays can be prepared with better sensory effects.

[0073] In addition, comparing the results of Example 1 and Example 5, it can be seen that the disposable hair dye spray containing silica has a better sensory effect. This is because the structure of silica is a regular spherical porous structure, which can reduce friction and increase elongation, while also improving the application feel and spreading properties.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, it is not limited to those listed in the embodiments. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A disposable hair dye spray, characterized in that, The raw materials, by weight, comprise 5-12 parts film-forming agent, 3-15 parts conditioning agent, 10-30 parts dispersant, 1-5 parts colorant, and 45-75 parts propellant. The film-forming agent comprises acrylate copolymers and acrylate-polysiloxane copolymers, with a weight ratio of acrylate copolymer to acrylate-polysiloxane copolymer of 1-4:5-10. The conditioning agent comprises siloxane compounds, and the dispersant comprises alcohol compounds and C... 10 ~C 18 Long-chain alkanes, the alcohols and the C 10 ~C 18 The weight ratio of long-chain alkanes is 1:1.5 to 4.0, the alcohols include lower fatty alcohols and / or polyols, and the propellant includes substituted or unsubstituted C2 to C6 lower alkanes.

2. The disposable hair dye spray according to claim 1, characterized in that, The acrylate copolymers are selected from acrylic acid / acrylate copolymers, methyl acrylate / methyl methacrylate copolymers, methacrylic acid / ethyl acrylate copolymers, and acrylate / C copolymers. 12 -C 22 Alkyl methacrylate copolymers and acrylates / C 10 -C 30 At least one of the alkanol acrylate crosspolymers.

3. The disposable hair dye spray according to claim 1, characterized in that, The acrylate-polysiloxane copolymer is selected from acrylate / polydimethylsiloxane methacrylate copolymer and / or acrylate / propyl polytrimethylsiloxane methacrylate copolymer.

4. The disposable hair dye spray according to claim 1, characterized in that, The siloxane compound is selected from at least one of disiloxane, trisiloxane, polydimethylsiloxane, octyl polymethylsiloxane, methyl polytrimethylsiloxane, and cyclopentadimethylsiloxane.

5. The disposable hair dye spray according to claim 1, characterized in that, The conditioning agent also includes silica, wherein the silica content in the raw materials is ≤1.0 wt.%.

6. The disposable hair dye spray according to claim 1, characterized in that, The alcohol compound is selected from at least one of ethanol, propanol, propylene glycol, butanediol, and dipropylene glycol.

7. The disposable hair dye spray according to claim 1, characterized in that, The C 10 ~C 18 The long-chain alkane is selected from at least one of isododecane, isodecanane, isohexadecanane, and n-dodecane.

8. The disposable hair dye spray according to claim 1, characterized in that, The substituted or unsubstituted C2-C6 lower alkanes are selected from at least one of butane, isobutane, propane, and 1,1-difluoroethane.

9. The method for preparing a disposable hair dye spray according to any one of claims 1 to 8, characterized in that, Including the following steps: S1, the acrylate-polysiloxane copolymer and the C 10 ~C 18 After mixing the long-chain alkanes, the acrylic (ester) copolymer is added to obtain mixture A; S2, after homogenizing the colorant, the conditioning agent and the alcohol compound, a mixture B is obtained; S3, mix the mixture A and the mixture B to obtain mixture C; S4, after bottling and sealing the mixture C, fill it with the propellant.

10. The method of using the disposable hair dye spray according to any one of claims 1 to 8, characterized in that, The steps include: shaking the disposable hair dye spray, spraying the hair from a distance of 15-25cm, and letting it dry completely in 1-3 minutes to complete the hair dyeing process.

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