Composition special for repairing hair quality and preparation method thereof

Abstract

The invention discloses a composition special for repairing hair quality. The composition is prepared from the following components in percentage by mass: 0.3 to 0.8 percent of Chinese herbaceous peony root extract, 0.5 to 2.0 percent of panthenol, 0.5 to 1.5 percent of herba centellae extract, 0.5 to 3.0 percent of cationic conditioner, 1.0 to 5.0 percent of emulsifier and the balance of deionized water. The problems of hair perming and dyeing keratin damage, hair cuticle warping and cracking and long-acting repair evidence deficiency are solved. Through the synergistic effect of the three components, the hair tensile strength (larger than or equal to 1.37 MPa), the hair cuticle closure degree (larger than or equal to 82%) and the subjective smoothness score (larger than or equal to 4.6 / 5) are remarkably improved. Experiments show that the effect of the composition provided by the invention is improved by 48%-67% compared with that of a single component, and the composition has an unpredictable synergistic effect. The invention can be applied to hair care products.

Description

Technical Field

[0001] The present invention relates to the technical field of cosmetics, and specifically to a composition dedicated to repairing hair quality and a preparation method thereof. Background Art

[0002] In the prior art, hair masks for repairing permed and dyed damage mostly rely on silicone oil (such as polydimethylsiloxane) or cationic surfactants (such as behenyl trimethyl ammonium methyl sulfate) to achieve instant smoothness, but there are the following defects:

[0003] 1. Unable to deeply repair: Silicone oil only wraps the surface of the hair strands and cannot repair keratin degradation and disulfide bond breakage (such as CN112107466A);

[0004] 2. Poor penetration of active ingredients: Plant extracts are difficult to penetrate into the hair core due to their large molecular weight (such as CN113577707A);

[0005] 3. Lack of long-term evidence: Existing products lack quantitative data support for the repair of the microscopic structure of the hair cuticle. Summary of the Invention

[0006] The purpose of the present invention is to provide a composition dedicated to repairing hair quality and a preparation method thereof to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A composition dedicated to repairing hair quality includes the following components by mass percentage:

[0009] Paeonia lactiflora root extract 0.3 - 0.8%, panthenol 0.5 - 2.0%, centella asiatica extract 0.5 - 1.5%, cationic conditioner 0.5 - 3.0%, emulsifier 1.0 - 5.0%, and the balance is deionized water.

[0010] As a further aspect of the present invention: The centella asiatica extract is the root extract of centella asiatica.

[0011] As a further aspect of the present invention: The content of paeoniflorin in the paeonia lactiflora root extract is ≥5%.

[0012] As a further aspect of the present invention: The content of asiaticoside in the centella asiatica extract is ≥40%.

[0013] As a further aspect of the present invention: The cationic conditioner is a mixture of polyquaternium-10 and behenyl trimethyl ammonium methyl sulfate, and the mass ratio is 1:1 - 3.

[0014] As a further aspect of the present invention: The emulsifier is cetyl stearyl olivate.

[0015] A method for preparing a composition specifically for repairing hair, comprising the following steps:

[0016] a. Dissolve panthenol and peony root extract in 50-55°C deionized water;

[0017] b. Mixing the Centella asiatica extract and the emulsifier in the oil phase at 65-70°C;

[0018] c. Add the oil phase to the water phase and homogenize and emulsify using a homogenizer for 5-10 minutes (homogenizer speed 3000-5000rpm);

[0019] d. Cool down to below 40°C and add cationic conditioning agent;

[0020] e. Adjust pH to 5.5-6.0 and fill.

[0021] A composition specially used for repairing hair is used in products for repairing hair damaged by perm or dyeing.

[0022] Experiments show that the combination of the three significantly improves the repair effect compared to a single ingredient as shown in the following table (p<0.01):

[0023]

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The invention solves the problems of keratin damage in hair perming and dyeing, hair scale cracking and lack of evidence for long-term repair.

[0026] Through the synergistic effect of the three, the present invention significantly improves the hair tensile strength (≥1.37MPa), the hair scale closure (≥82%) and the subjective smoothness score (≥4.6 / 5 points).

[0027] Experiments show that the combination proposed by the present invention has an effect improved by 48%-67% compared with a single component, and has an unforeseen synergistic effect.

[0028] The present invention can be used in hair care products. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] In the embodiments of the present invention, a composition specifically for repairing hair quality comprises the following components by mass percentage:

[0032] 0.3% of peony root extract, 0.5% of panthenol, 0.5% of centella asiatica extract, 0.5% of cationic conditioner, 1.0% of emulsifier, and the balance is deionized water.

[0033] The content of paeoniflorin in the peony root extract is ≥5%; the content of asiaticoside in the centella asiatica extract is ≥40%.

[0034] The cationic conditioner is a mixture of polyquaternium-10 and behenyl trimethyl ammonium methyl sulfate, and the mass ratio is 1:1.

[0035] The emulsifier is cetearyl olivate.

[0036] A preparation method of a composition specifically for repairing hair quality comprises the following steps:

[0037] a. Aqueous phase: Add panthenol and peony root extract to deionized water at 50°C and stir to dissolve.

[0038] b. Oil phase: Heat the centella asiatica extract and the emulsifier to 65°C and mix.

[0039] c. Emulsification: Add the oil phase to the aqueous phase and homogenize and emulsify for 5 minutes (rotation speed 3000 rpm).

[0040] d. Cool down to below 40°C and add the cationic conditioner.

[0041] e. Adjust the pH to 5.5 and fill.

[0042] Example 2

[0043] In the embodiments of the present invention, a composition specifically for repairing hair quality comprises the following components by mass percentage:

[0044] 0.8% of peony root extract, 2.0% of panthenol, 1.5% of centella asiatica extract, 3.0% of cationic conditioner, 5.0% of emulsifier, and the balance is deionized water.

[0045] The content of paeoniflorin in the peony root extract is ≥5%; the content of asiaticoside in the centella asiatica extract is ≥40%.

[0046] The cationic conditioner is a mixture of polyquaternium-10 and behenyl trimethyl ammonium methyl sulfate, and the mass ratio is 1:3.

[0047] The emulsifier is cetearyl olivate.

[0048] A preparation method of a composition specifically for repairing hair quality comprises the following steps:

[0049] a. Aqueous phase: Dissolve panthenol and peony root extract in deionized water at 80 °C with stirring.

[0050] b. Oil phase: Heat the centella asiatica extract and the emulsifier to 70 °C and mix them.

[0051] c. Emulsification: Add the oil phase to the aqueous phase and homogenize and emulsify for 10 minutes (rotation speed 5000 rpm).

[0052] d. Cool down to below 40 °C and add the cationic conditioner.

[0053] e. Adjust the pH to 6.0 and fill.

[0054] Example 3

[0055] In the examples of the present invention, a composition specifically for repairing hair quality comprises the following components by mass percentage:

[0056] Peony root extract 0.5%, panthenol 1.2%, centella asiatica extract 1.0%, cationic conditioner 1.8%, emulsifier 2.0%, and the balance is deionized water.

[0057] The content of paeoniflorin in the peony root extract is ≥5%; the content of asiaticoside in the centella asiatica extract is ≥40%.

[0058] The cationic conditioner is a mixture of polyquaternium-10 and behenyl trimethyl ammonium methyl sulfate, and the mass ratio is 1:2.

[0059] The emulsifier is cetearyl olivate.

[0060] A preparation method of a composition specifically for repairing hair quality comprises the following steps:

[0061] a. Aqueous phase: Dissolve panthenol and peony root extract in deionized water at 65 °C with stirring.

[0062] b. Oil phase: Heat the centella asiatica extract and the emulsifier to 68 °C and mix them.

[0063] c. Emulsification: Add the oil phase to the aqueous phase and homogenize and emulsify for 8 minutes (rotation speed 4000 rpm).

[0064] d. Cool down to below 40 °C and add the cationic conditioner.

[0065] e. Adjust the pH to 5.8 and fill.

[0066] Example 4

[0067] Hair strand tensile strength test (Instron 3365A)

[0068] Sample treatment:

[0069] Select 50 bundles of human hair damaged by perming and dyeing (diameter 50 - 60 μm), and divide them into 5 groups;

[0070] Soak each group in different hair masks for 30 minutes and dry at 37°C.

[0071] Test parameters:

[0072] Tensile speed: 50 mm / min;

[0073] Clamp spacing: 50 mm;

[0074] Ambient temperature and humidity: 25°C, 50% RH.

[0075] The test results are as follows:

[0076] Group Breaking load (N) Tensile strength (MPa) Blank control group 1.02±0.15 0.65±0.09 Three-component compound group 2.15±0.21 1.37±0.13

[0077] Example 5

[0078] Analysis of cuticle closure (SEM, Hitachi SU8010)

[0079] Sample preparation:

[0080] Take the middle section of the hair strand and perform gold spraying (thickness 10 nm);

[0081] Magnify the scanning electron microscope by 2000 times and randomly select 10 fields of view.

[0082] Quantification method:

[0083] Closure degree = (number of intact cuticles / total number of cuticles) × 100%.

[0084] The analysis results are as follows:

[0085] Group Degree of cuticle closure (%) Blank control group 45±6 Three-component compound group 82±5

[0086] Example 6

[0087] Subjective smoothness score

[0088] Test design:

[0089] Subjects: 50 women aged 18 - 45 (permed and dyed hair quality);

[0090] Usage frequency: 3 times a week for 4 weeks;

[0091] Scoring criteria: 1 point (severely frizzy) to 5 points (extremely smooth). The scoring results are as follows:

[0092] Group Average score (points) Improvement rate (vs blank) Blank control group 2.5±0.6 - Three-component compound group 4.6±0.4 84％

[0093] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A composition specially used for repairing hair, characterized in that: The following components are included by mass percentage: 0.3-0.8% of peony root extract, 0.5-2.0% of panthenol, 0.5-1.5% of Centella asiatica extract, 0.5-3.0% of cationic conditioning agent, 1.0-5.0% of emulsifier, and the balance is deionized water.

2. The composition for repairing hair according to claim 1, characterized in that: Centella asiatica extract is an extract from the root of Centella asiatica.

3. The composition for repairing hair according to claim 1 or 2, characterized in that: The content of paeoniflorin in the peony root extract is ≥5%.

4. The composition for repairing hair according to claim 3, characterized in that: The content of asiatica glycoside in the Centella asiatica extract is ≥40%.

5. The composition for repairing hair according to claim 4, characterized in that: The cationic conditioning agent is a mixture of polyquaternium-10 and behenyltrimethylammonium methylsulfate, with a mass ratio of 1:1-3.

6. The composition for repairing hair according to claim 5, characterized in that: The emulsifier is cetearyl olive oil ester.

7. A method for preparing a composition specifically for repairing hair as claimed in claim 5, characterized in that: The specific steps are as follows: a. Dissolve panthenol and peony root extract in 50-55°C deionized water; b. Mixing the Centella asiatica extract and the emulsifier in the oil phase at 65-70°C; c. Add the oil phase to the water phase, homogenize and emulsify for 5-10 minutes at a speed of 3000-5000rpm; d. Cool down to below 40°C and add cationic conditioning agent; e. Adjust pH to 5.5-6.0 and fill.

8. A composition specially used for repairing hair is used in products for repairing hair damaged by perm or dyeing.

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