A fragrance hair dye with enhanced fragrance retention and a preparation process thereof

Abstract

The application discloses a fragrance hair dyeing cream with enhanced fragrance retention and a preparation process thereof, and has the following beneficial effects: the fragrance hair dyeing cream of the application not only adds a fragrance agent, but also adds a hair conditioner, the hair conditioner can well disperse the fragrance agent inside the cream body, let the perfume evenly attach to the hair with the cream body, the hair conditioner can also form a hydrophobic film to wrap and imprison the perfume molecules of the fragrance agent, reduce the evaporation rate of the perfume, and reduce the washing away of the perfume by water in the flushing stage. In summary, the application can effectively enhance the fragrance retention time of the hair dyeing cream, so as to better improve the use experience of the hair dyeing cream.

Description

Technical Field

[0001] This invention relates to the field of cosmetics technology, specifically to a fragrance hair dye with enhanced fragrance retention and its preparation process. Background Technology

[0002] With the rapid development of the hair dyeing and beauty industry and people's ever-increasing pursuit of beauty, hair dyeing is becoming increasingly accepted. Currently, the main hair dyes used on the market are permanent dyes; however, current hair dyes have the following technical problems: they only add daily-use fragrances, resulting in most of the fragrance being washed away during rinsing, and the scent basically disappearing a few hours after dyeing. They only mask the odor during the dyeing process, making it difficult to achieve long-lasting fragrance retention on the hair. Therefore, this application proposes a fragrance-enhancing hair dye that can improve fragrance retention. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a fragrance hair dye with enhanced fragrance retention and its preparation process, which can solve the aforementioned technical problems.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fragrance hair dye with enhanced fragrance retention, comprising the following raw materials in weight percentage: water 70-75%, cetearyl alcohol 7-9%, emulsifier 4.5-6%, pH adjuster 6-7%, antioxidant 0.8-1%, hair dye 2.5-3.5%, fragrance 0.6-1.2%, and hair conditioning agent 3-4%.

[0007] Preferably, the fragrance agent includes flavoring.

[0008] Preferably, the hair conditioner includes a first hair conditioner and / or a second hair conditioner.

[0009] Preferably, the first conditioning agent comprises a compound of 70% C13-16 isoparaffins and 30% polydimethylsiloxane.

[0010] Preferably, the second conditioning agent comprises a compound of 82.5% cyclopentamethoxysiloxane and 17.5% polydimethylsiloxane alcohol.

[0011] Preferably, the emulsifier includes a first emulsifier, a second emulsifier, and a third emulsifier, wherein the first emulsifier includes cetearyl alcohol polyether-25; the second emulsifier includes a compound of 70% cetearyl trimethylammonium chloride and 30% ethanol; and the third emulsifier includes a compound of 40% glyceryl stearate, 5% glycerol, and 55% lauric acid / myristic acid / palmitic acid / glyceryl stearate.

[0012] Preferably, the pH adjuster includes a first pH adjuster and a second pH adjuster, wherein the first pH adjuster includes ethanolamine; and the second pH adjuster includes a compound of 75% water and 25% ammonium hydroxide.

[0013] Preferably, the hair dye includes any one or more of toluene-2,5-diamine sulfate, p-phenylenediamine, resorcinol, 2-methylresorcinol, phenylmethylpyrazolone, m-aminophenol, and 2-amino-4-hydroxyethylaminoanisole sulfate.

[0014] Preferably, the fragrance hair dye with enhanced fragrance retention also includes 0.3-0.5% disodium EDTA.

[0015] To solve the above-mentioned technical problems, the present invention provides another technical solution as follows: a preparation process for a fragrance hair dye with enhanced fragrance retention as described above, comprising the following steps:

[0016] S1. Add phase A raw material to the emulsification pot, heat to 80-85℃, stir evenly, and start cooling;

[0017] S2. When the temperature drops to 45℃, add the B phase raw material to the emulsifying pot and stir evenly.

[0018] S3. Add the C-phase raw material to the emulsifying pot and stir evenly;

[0019] S4. Submit for inspection. After passing the inspection, filter, fill, and package the material.

[0020] The raw materials in phase A include water, cetearyl alcohol, emulsifiers, antioxidants, and hair dyes; the raw materials in phase B include pH adjusters and hair conditioning agents; and the raw materials in phase C include fragrances.

[0021] (III) Beneficial Effects

[0022] Compared with existing technologies, this invention provides a fragrance-enhancing hair dye and its preparation process, offering the following beneficial effects: The fragrance-enhancing hair dye of this invention not only contains fragrance agents but also hair conditioning agents. These hair conditioning agents effectively disperse the fragrance agents within the dye, allowing the fragrance to adhere evenly to the hair strands. Furthermore, the hair conditioning agents form a hydrophobic film that encapsulates and traps the fragrance molecules, reducing the evaporation rate and minimizing the amount of fragrance washed away during rinsing. In summary, this invention effectively enhances the fragrance retention of hair dye, thereby improving the user experience. Attached Figure Description

[0023] Figure 1 This is a flowchart illustrating the preparation process of a fragrance hair dye with enhanced fragrance retention according to the present invention. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides a fragrance hair dye with enhanced fragrance retention, comprising the following raw materials by weight percentage: water 70-75%, cetearyl alcohol 7-9%, emulsifier 4.5-6%, pH adjuster 6-7%, antioxidant 0.8-1%, hair dye 2.5-3.5%, fragrance 0.6-1.2%, and hair conditioning agent 3-4%.

[0026] It is understood that the fragrance hair dye of the present invention corresponds to Agent A hair dye, which can be used in conjunction with Agent B hydrogen peroxide emulsion of the prior art to achieve dyeing; wherein, water is used as the solvent of the entire fragrance hair dye system to dissolve water-soluble raw materials such as dye intermediates, pH adjusters, and antioxidants; cetearyl alcohol is a thickener.

[0027] The hair conditioning agent of the present invention includes a first hair conditioning agent and / or a second hair conditioning agent. Preferably, the first hair conditioning agent comprises a compound of 70% C13-16 isoparaffins and 30% polydimethylsiloxane. It should be noted that C13-16 isoparaffin is a light synthetic hydrocarbon oil, and polydimethylsiloxane is a silicone conditioner. The combination of the two takes into account the spreadability, hair protection, and fragrance retention. It is suitable for oxidative hair dye A agent and has better overall performance compared with single raw materials. Specifically, the above-mentioned first hair conditioner can achieve the following beneficial effects: (1) Smooth and light feel, not oily and flat: C13-16 isoparaffin has low surface tension and excellent spreadability. It can dilute silicone oil and improve the problem of silicone oil easily agglomerating locally. When the paste is applied to the hair, it spreads smoothly and is not sticky or heavy. Polydimethylsiloxane forms a silicone film on the surface of the hair, which greatly reduces the friction coefficient between hair strands and significantly improves dry and wet combing ability. It also improves the dryness, tangling, static frizz caused by the alkalinity of hair dye. The combination of the two can avoid the problem of oily hair and hair sticking to the scalp caused by high addition of pure silicone oil. The hair remains light and fluffy after dyeing. (2) Hair protection and reduction of hair dyeing damage: During the hair dyeing process, the hair cuticles are opened by strong alkali. The first hair conditioner will form a thin oil-silicone composite protective film on the outer layer of the hair cuticles: buffering the excessive erosion of hair keratin by alkaline components, reducing the damage caused by hair dyeing; smoothing the raised hair cuticles, locking in the moisture inside the hair, and enhancing the shine of the hair after dyeing. (3) Compatible with fragrance hair dye and synergistic enhancement of fragrance retention: C13-16 isoparaffins are non-polar oils with strong dissolving ability for hydrophobic fragrances, helping the fragrance to be evenly dispersed in the paste; the first hair conditioner can form a thin oil-silicone composite protective film on the surface of the hair. This oil-silicone composite protective film can reduce the damage of alkaline hair dye to the hair, enhance the shine of the hair, and at the same time, it can wrap and fix the fragrance molecules, reduce the volatilization and water loss of fragrance, help enhance the fragrance retention effect of the fragrance hair dye, and help delay the dissolution of dye to achieve the color protection effect. In summary, the mixture of C13-16 isoparaffin and polydimethylsiloxane used in the first hair conditioner is chemically stable, suitable for the strongly alkaline system of hair dye, and does not interfere with the color development of the dye. C13-16 isoparaffin provides excellent spreadability, dilutes silicone oil to avoid greasiness and heaviness, and polydimethylsiloxane gives hair a smooth feel. The two form a thin oil-silicone composite protective film on the hair surface, reducing the damage of alkaline hair dye to hair, enhancing hair shine, and at the same time encapsulating and fixing fragrance molecules, reducing fragrance volatilization and water loss, helping to enhance the fragrance retention effect of the fragrance hair dye, and helping to delay dye dissolution, thus achieving a color protection effect.

[0028] Preferably, the second hair conditioner comprises a compound of 82.5% cyclopentamethoxysiloxane and 17.5% polydimethylsiloxane alcohol. It should be understood that in this compound of the second hair conditioner, cyclopentamethoxysiloxane acts as a carrier solvent to dissolve and disperse the polymeric colloidal polydimethylsiloxane alcohol (hydroxyl silicone oil); after application, the cyclopentamethoxysiloxane gradually evaporates, leaving a layer of breathable protective film of polymeric hydroxyl siloxane on the hair surface. The second hair conditioner is compatible with oxidative hair dyeing. The agent is a strong alkaline system that takes into account conditioning, color protection and fragrance retention. Compared with ordinary polydimethylsiloxane, it has a drier feel and is less heavy and oily. Specifically, the above-mentioned second hair conditioning agent can achieve the following beneficial effects: (1) Conditioning feel, dry and velvety touch, without adding burden to the hair: Cyclopentasiloxane has low surface tension and excellent spreadability. When the paste is applied, it is smooth and easy to spread. It will gradually evaporate afterward and will not leave a sticky oily feeling, avoiding the flat and heavy hair after dyeing. After evaporation, polydimethylsiloxane alcohol remains on the hair, bringing a velvety smoothness, significantly improving the dry and wet combability after dyeing, reducing tangles, static frizz, and has a prominent effect on improving the smoothness of bleached and dyed damaged hair. Unlike ordinary high molecular weight dimethyl silicone oil, it is not easy to cause silicon deposition and accumulation, and long-term use will not cause hair to feel heavy. (2) Hair film protection, reducing alkaline damage from hair dyeing: Polydimethylsiloxane alcohol has hydroxyl groups at the end, which makes it more effective at hydrogen bonding with hair keratin than ordinary polydimethylsiloxane, resulting in better film adhesion and a more uniform and durable protective film. During the hair dyeing process, the hair cuticles open, and the second hair conditioner can form a breathable and hydrophobic protective film on the outside of the hair cuticles, buffering the erosion of the hair keratin by strong alkali. It smooths the raised hair cuticles, reduces dryness and split ends after dyeing, and enhances the shine of the hair. (3) Color protection effect, slowing down hair color fading after washing: The hydrophobic silicone film covers the hair, reducing the outward dissolution and loss of dye molecules during washing, and plays an auxiliary role in fixing the color after oxidative dyeing, delaying fading and increasing the color retention time. (4) Core benefits of fragrance hair dye - enhanced fragrance retention: Cyclopentasiloxane has excellent solubility for hydrophobic fragrances and can effectively disperse the fragrance inside the hair dye, allowing the fragrance to adhere evenly to the hair strands along with the dye. After application, cyclopentasiloxane slowly evaporates, and polydimethylsiloxane alcohol forms a hydrophobic film that encapsulates and imprisons the fragrance molecules, reducing the evaporation rate of the fragrance and minimizing the amount of fragrance washed away by water during the rinsing stage. When the silicone film is disturbed by the friction of combing, it can assist in the release of fragrance and prolong the fragrance retention time. (5) Formula compatibility advantages: The premix of the second hair conditioning agent has good dispersibility and is easily emulsified into the hair dye of this invention. It has good compatibility with fragrances and does not damage the emulsification stability of the dye.In summary, the second hair conditioning agent uses a mixture of cyclopentamethoxysiloxane and polydimethylsiloxane alcohol. Cyclopentamethoxysiloxane acts as a volatile carrier to ensure uniform spreading and evaporation of the material. Polydimethylsiloxane alcohol forms hydrogen bonds with hair keratin through hydroxyl groups, creating a uniform, breathable, and hydrophobic protective film on the hair surface. This mixture is resistant to the strongly alkaline environment of hair dye, does not interfere with dye development, improves the combability of hair after dyeing (both dry and wet), alleviates frizz and damage caused by alkaline dyeing, and enhances hair shine. At the same time, it can encapsulate and retain fragrance molecules, reducing fragrance evaporation and water loss, helping to improve the fragrance retention of scented hair dye, and also helps to slow down dye dissolution, thus protecting the color.

[0029] Furthermore, preferably, the hair conditioning agent of the present invention may also include a third hair conditioning agent, which is specifically mineral oil. Mineral oil is a non-polar oil, which has good solubility for hydrophobic fragrances and can dissolve and disperse fragrances. The oil film can encapsulate fragrance molecules, reduce the evaporation rate of fragrances, reduce the amount of fragrance washed away by water during rinsing, and prolong the fragrance retention time of hair.

[0030] A specific embodiment of the fragrance-enhancing hair dye of the present invention: 72.76% water, 8% cetearyl alcohol, emulsifiers: 2.8% cetearyl alcohol polyether-25 (first emulsifier), 1.2% a compound of 70% cetearyl trimethylammonium chloride and 30% ethanol (second emulsifier), 40% glyceryl stearate, 5% glycerin, 1% a compound of 55% lauric acid / myristic acid / palmitic acid / glyceryl stearate (third emulsifier), pH adjuster: 4% ethanolamine (first pH adjuster), 2% a compound of 75% water and 25% ammonium hydroxide (second pH adjuster), antioxidants: 0.3% ascorbic acid (vitamin C), 0.5% sodium sulfite, hair dye. Components: Toluene-2,5-diamine sulfate 0.68%, p-phenylenediamine 1.2%, resorcinol 0.6%, 2-methylresorcinol 0.15%, phenylmethylpyrazolone 0.2%, m-aminophenol 0.08%, 2-amino-4-hydroxyethylaminoanisole sulfate 0.08%, (daily use) fragrance 0.8%, hair conditioner: a compound of C13-16 isoparaffins 70%, polydimethylsiloxane 30% (first hair conditioner) 1%, a compound of cyclopentamethoxysiloxane 82.5%, polydimethylsiloxane alcohol 17.5% (second hair conditioner) 0.25%, mineral oil (third hair conditioner) 2%, disodium EDTA (chelating agent) 0.4%.

[0031] The preparation process of the enhanced fragrance hair dye in the above embodiments includes the following steps:

[0032] S1. Add phase A raw material to the emulsification pot, heat to 80℃, stir evenly, and start cooling.

[0033] S2. When the temperature drops to 45℃, add the B phase raw material to the emulsifying pot and stir evenly.

[0034] S3. Add the C phase raw material to the emulsifying pot and stir evenly.

[0035] S4. Submit for inspection. After passing the inspection, filter, fill, and package the material.

[0036] The raw materials in phase A include water, cetearyl alcohol, emulsifier, antioxidant, hair dye, and disodium EDTA; the raw materials in phase B include pH adjuster and hair conditioning agent; and the raw materials in phase C include fragrance.

[0037] Compared with existing technologies, this invention provides a fragrance hair dye with enhanced fragrance retention and its preparation process, which has the following beneficial effects: The fragrance hair dye of this invention not only contains fragrance agents but also hair conditioning agents. These hair conditioning agents can effectively disperse the fragrance agents within the dye, allowing the fragrance to adhere evenly to the hair strands. The hair conditioning agents can also form a hydrophobic film, encapsulating and trapping the fragrance molecules, reducing the evaporation rate of the fragrance, and minimizing the amount of fragrance washed away during rinsing. In summary, this invention can effectively enhance the fragrance retention time of the hair dye, thereby improving the user experience. Specifically, statistical analysis of fragrance retention time comparison tests with and without hair conditioning agents shows that the fragrance retention time of the hair dye without hair conditioning agents is 4-6 hours, while the fragrance retention time of the fragrance hair dye of this invention with added hair conditioning agents can be increased to 30-33 hours.

[0038] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fragrance-enhancing hair dye, characterized in that, The ingredients include the following weight percentages: water 70-75%, cetearyl alcohol 7-9%, emulsifier 4.5-6%, pH adjuster 6-7%, antioxidant 0.8-1%, hair dye 2.5-3.5%, fragrance 0.6-1.2%, and hair conditioning agent 3-4%.

2. The fragrance-enhancing hair dye according to claim 1, characterized in that: The fragrance agent includes flavorings.

3. The fragrance-enhancing hair dye according to claim 1, characterized in that: The hair conditioning agent includes a first hair conditioning agent and / or a second hair conditioning agent.

4. The fragrance-enhancing hair dye according to claim 3, characterized in that: The first conditioning agent comprises a compound of 70% C13-16 isoparaffins and 30% polydimethylsiloxane.

5. The fragrance-enhancing hair dye according to claim 3, characterized in that: The second conditioning agent comprises a compound of 82.5% cyclopentamethoxysiloxane and 17.5% polydimethylsiloxane alcohol.

6. The fragrance-enhancing hair dye according to claim 1, characterized in that: The emulsifier includes a first emulsifier, a second emulsifier, and a third emulsifier, wherein the first emulsifier includes cetearyl alcohol polyether-25; the second emulsifier includes a compound of 70% cetearyl trimethylammonium chloride and 30% ethanol; and the third emulsifier includes a compound of 40% glyceryl stearate, 5% glycerol, and 55% lauric acid / myristic acid / palmitic acid / glyceryl stearate.

7. The fragrance-enhancing hair dye according to claim 1, characterized in that: The pH adjuster includes a first pH adjuster and a second pH adjuster, wherein the first pH adjuster includes ethanolamine; and the second pH adjuster includes a compound of 75% water and 25% ammonium hydroxide.

8. The fragrance-enhancing hair dye according to claim 1, characterized in that: The hair dye includes any one or more of toluene-2,5-diamine sulfate, p-phenylenediamine, resorcinol, 2-methylresorcinol, phenylmethylpyrazolone, m-aminophenol, and 2-amino-4-hydroxyethylaminoanisole sulfate.

9. The fragrance-enhancing hair dye according to claim 1, characterized in that: It also includes 0.3-0.5% disodium EDTA.

10. A preparation process for a fragrance-enhancing hair dye as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Add phase A raw material to the emulsification pot, heat to 80-85℃, stir evenly, and start cooling; S2. When the temperature drops to 45°C, add the B phase raw material to the emulsifying pot and stir evenly; S3. Add the C-phase raw material to the emulsifying pot and stir until homogeneous; S4. Submit for inspection. After passing the inspection, filter, fill, and package the material. The A-phase raw materials include water, cetearyl alcohol, emulsifier, antioxidant, and hair dye; the B-phase raw materials include pH adjuster and hair conditioning agent; and the C-phase raw materials include fragrance.

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