Standard substance for sensory evaluation of water dosage form and application of standard substance

Abstract

The invention relates to a standard substance for water-based sensory evaluation and application thereof, the standard substance comprises a combination of at least two of a standard substance 1, a standard substance 2, a standard substance 3 or a standard substance 4, and the composition of the four standard substances is limited. The four standard substances provided by the invention can be jointly used for sensory evaluation of the water type cosmetics, have the advantages of covering multiple characteristics, being high in stability, not easy to interfere evaluation indexes, having different skin feelings and the like, and provide reliable reference basis for sensory evaluation of the cosmetics.

Description

Technical Field

[0001] The present invention relates to the technical field of cosmetics, and in particular to a standard product for sensory evaluation of aqueous formulations and application thereof. Background Art

[0002] With the development of the social economy and the general improvement of people's living standards, people are paying more attention to their appearance, and cosmetics have gradually become an indispensable part of their daily lives and work. With the widespread use of cosmetics, consumers' expectations for cosmetics are also getting higher and higher. Excellent cosmetics must not only improve consumers' skin quality as much as possible, but also provide a good consumer experience, including psychological needs and skin experience.

[0003] Cosmetics sensory evaluation is based on psychology, physiology, and statistics. It relies on the human senses (sight, hearing, touch, taste, and smell) to evaluate, measure, or test cosmetics, and conducts statistical analysis to assess their quality. Cosmetics sensory evaluation can be used to measure the sensory properties of cosmetics and design better skin-feeling cosmetics to enhance consumer experience and satisfaction. Therefore, it plays a vital role in cosmetics research and development.

[0004] Some scholars have explored the application of paired comparison tests in the sensory evaluation of emulsion-based cosmetics, and established an evaluation system for the sensory evaluation of emulsion-based skin care cosmetics through experiments. They tested five samples with different formulas and obtained sample formulas with better results for different sensory evaluation indicators. However, their scoring relied on subjective evaluation and lacked reference to standard products.

[0005] Therefore, it is necessary to provide a standard product suitable for the sensory evaluation of water-based cosmetics to provide a reference basis for sensory evaluation and reduce subjective evaluation differences. Summary of the Invention

[0006] To address the above technical issues, the present invention provides a standard sample for sensory evaluation of aqueous cosmetics and its application. The four standard samples provided herein can be used in combination for sensory evaluation of aqueous cosmetics. These standards offer advantages such as comprehensive coverage of multiple properties, high stability, low susceptibility to interference in evaluation indicators, and differentiated skin feel, providing a reliable reference for sensory evaluation of cosmetics.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a standard for sensory evaluation of an aqueous dosage form, wherein the standard comprises a combination of at least two of Standard 1, Standard 2, Standard 3, or Standard 4;

[0009] The standard 1 includes water, butylene glycol, sodium hyaluronate, β-glucan and 1,2-pentanediol;

[0010] The standard 2 includes water, acrylates / C10-30 alkyl acrylate crosspolymer, glycerin, 1,2-pentanediol, 1,2-hexanediol, caprylyl glycol, xanthan gum, methyl gluceth-20, fructose, glyceryl glucoside and aminomethyl propanol;

[0011] The standard 3 includes water, butylene glycol, ammonium acryloyldimethyltaurate / VP copolymer, t-butyl alcohol, dimethicone, decyl glucoside and polysilicone-11;

[0012] The standard 4 includes water and panthenol.

[0013] The present invention provides four standard products for sensory evaluation of aqueous formulations, each of which is compounded with specific components and has the following advantages:

[0014] (1) Covering multiple characteristics: These four standard formulations have different characteristics. Their combined use can cover multiple sensory properties of aqueous dosage forms and provide a more comprehensive reference standard for sensory evaluation;

[0015] (2) High stability: These four standard formulas showed high stability under different environmental conditions such as high temperature, low temperature, and light, with little change in appearance, texture, and odor;

[0016] (3) Evaluation indicators are not easily disturbed: The consistency, spreadability and other indicators of the standard product are relatively stable, and the standard product can maintain consistent usage experience in different usage environments and skin types;

[0017] (4) Skin feel is different: the four standard products basically cover the corresponding low, medium and high skin feel scoring dimensions. The use of standard products can effectively guide sensory evaluators to have a consistent skin feel score for aqueous formulations and reduce the influence of subjective factors on skin feel evaluation scores.

[0018] In summary, the four standard products provided by the present invention can be used jointly for sensory evaluation of aqueous dosage forms. They have the advantages of covering multiple characteristics, high stability, evaluation indicators not easily disturbed, and different skin feel, providing a reliable reference for the sensory evaluation of cosmetics.

[0019] In the present invention, standard 1, standard 2, standard 3, and standard 4 can be named the first standard, the second standard, the third standard, and the fourth standard, respectively. "First" and "second" are only for distinction and do not limit the order.

[0020] Preferably, the standard 1 comprises, by mass, 82-88 parts of water (for example, 82 parts, 83 parts, 84 parts, 85 parts, 86 parts, 87 parts, 88 parts, etc.), 2-4 parts of butanediol (for example, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, etc.), 0.1-0.2 parts of sodium hyaluronate (for example, 0.1 parts, 0.12 parts, 0.15 parts, 0.18 parts, 0.2 parts, etc.), 1.5-2.5 parts of β-glucan (for example, 1.5 parts, 1.8 parts, 2 parts, 2.2 parts, 2.5 parts, etc.) and 6-8 parts of 1,2-pentanediol (for example, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, etc.).

[0021] Preferably, the standard 2 comprises 70-76 parts of water (for example, 70 parts, 71 parts, 72 parts, 73 parts, 74 parts, 75 parts, 76 parts, etc.), 0.1-0.2 parts of acrylic acid (esters) / C10-30 alkyl acrylate cross-polymer (for example, 0.1 parts, 0.12 parts, 0.15 parts, 0.18 parts, 0.2 parts, etc.), 8-12 parts of glycerol (for example, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, etc.), 3-6 parts of 1,2-pentanediol (for example, 3 parts, 4 parts, 5 parts, 6 parts, etc.), 0.08-0.12 parts of 1,2-hexanediol (for example, 0.08 parts, 0.09 parts, 0.1 parts, 0.11 parts, 0.12 parts, etc.), 0.2-0.3 Parts of caprylyl glycol (for example, 0.2 parts, 0.22 parts, 0.25 parts, 0.28 parts, 0.3 parts, etc.), 0.1-0.2 parts of xanthan gum (for example, 0.1 parts, 0.12 parts, 0.15 parts, 0.18 parts, 0.2 parts, etc.), 2-4 parts of methyl gluceth-20 (for example, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, etc.), 4-6 parts of fructose (for example, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, etc.), 2-3 parts of glyceryl glucoside (for example, 2 parts, 2.2 parts, 2.5 parts, 2.8 parts, 3 parts, etc.), and 0.08-0.09 parts of aminomethyl propanol (for example, 0.08 parts, 0.082 parts, 0.085 parts, 0.088 parts, 0.09 parts, etc.).

[0022] Preferably, the standard 3 comprises, by mass, 90-94 parts of water (for example, 90 parts, 91 parts, 92 parts, 93 parts, 94 parts, etc.), 5-7 parts of butanediol (for example, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, etc.), 0.05-0.07 parts of ammonium acryloyldimethyltaurate / VP copolymer (for example, 0.05 parts, 0.055 parts, 0.06 parts, 0.065 parts, 0.07 parts, etc.), 0.2-0.3 parts of tert-butyl alcohol (for example, 0.2 parts, 0.22 parts, etc.), The present invention also provides the following ingredients: 1. The present invention relates to a polysilicone copolymer (for example, 0.1 part, 0.25 part, 0.28 part, 0.3 part, etc.), 0.3-0.5 part of polydimethylsiloxane (for example, 0.3 part, 0.35 part, 0.4 part, 0.45 part, 0.5 part, etc.), 0.25-0.45 part of decyl glucoside (for example, 0.25 part, 0.3 part, 0.35 part, 0.4 part, 0.45 part, etc.), and 0.04-0.06 part of polysilicone-11 (for example, 0.04 part, 0.045 part, 0.05 part, 0.055 part, 0.06 part, etc.).

[0023] Preferably, the standard 4 comprises 85-90 parts of water (for example, 85 parts, 86 parts, 87 parts, 88 parts, 89 parts, 90 parts, etc.) and 4-6 parts of panthenol (for example, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, etc.) by mass.

[0024] Preferably, the standard product 1, the standard product 2 and the standard product 4 also include a preservative.

[0025] Preferably, the standard product 1, the standard product 2 and the standard product 4 each independently further include 0.01-0.08 parts (for example, 0.01 parts, 0.02 parts, 0.04 parts, 0.06 parts, 0.08 parts, etc.) of preservatives by mass.

[0026] Preferably, the preservative comprises caprylhydroxamic acid and / or phenoxyethanol.

[0027] Preferably, the sensory evaluation index includes any one or a combination of at least two of a pre-use evaluation index, an during-use evaluation index, or a post-use evaluation index;

[0028] The pre-use evaluation index includes any one or a combination of at least two of brightness, transparency or fluidity;

[0029] The evaluation index during use includes any one or a combination of at least two of spreadability, slippery feeling, moist feeling, refreshing feeling or absorption speed;

[0030] The post-use evaluation index includes any one or a combination of at least two of glossiness, slippery feeling, softness, stickiness or retention feeling.

[0031] In the brightness and transmittance evaluation, the standard samples used include standard sample 1 and standard sample 3;

[0032] In the fluidity evaluation, the standards used include Standard 1, Standard 2, and Standard 3;

[0033] In the spreadability evaluation, the standards used include Standard 1, Standard 3, and Standard 4;

[0034] In the evaluation of slippery feeling, moist feeling, refreshing feeling, absorption speed, soft feeling, and sticky feeling, the standard products used include standard product 1, standard product 2, standard product 3, and standard product 4;

[0035] In the evaluation of glossiness and lasting feeling, the standard products used include Standard Product 1, Standard Product 2, and Standard Product 4.

[0036] In a second aspect, the present invention provides a use of the standard substance for sensory evaluation of aqueous formulations according to the first aspect in the sensory evaluation of aqueous formulation cosmetics.

[0037] In a third aspect, the present invention provides a method for sensory evaluation of water-based cosmetics, the method comprising: setting evaluation indicators, assigning scores to the standard products for sensory evaluation of water-based cosmetics described in the first aspect in each evaluation indicator to obtain a scoring standard; and scoring the water-based cosmetics to be tested according to the scoring standard.

[0038] Preferably, in the brightness evaluation, based on a scoring range of 0-10 points, the score of standard product 1 is 7.5-8.5 (for example, it can be 7.5, 7.8, 8, 8.2, 8.5, etc.), and the score of standard product 3 is 2-3 (for example, it can be 2, 2.2, 2.5, 2.8, 3, etc.).

[0039] In the present invention, when the brightness of the sample to be tested is below that of standard 3, the score is between 0 and the score assigned to standard 3; when the brightness of the sample to be tested is between that of standard 3 and standard 1, the score is between the score assigned to standard 3 and standard 1; when the brightness of the sample to be tested is above that of standard 1, the score is between the score assigned to standard 1 and 10. The scoring of other indicators is similar.

[0040] Preferably, in the transparency evaluation, the score of standard product 1 is 8.5-9.5 (for example, it can be 8.5, 8.8, 9, 9.2, 9.5, etc.), and the score of standard product 3 is 2.5-3.5 (for example, it can be 2.5, 2.8, 3, 3.2, 3.5, etc.).

[0041] Preferably, in the fluidity evaluation, the score of standard product 1 is 8.5-9.5 (for example, it can be 8.5, 8.8, 9, 9.2, 9.5, etc.), the score of standard product 2 is 4.5-5.5 (for example, it can be 4.5, 4.8, 5, 5.2, 5.5, etc.), and the score of standard product 3 is 1.5-2.5 (for example, it can be 1.5, 1.8, 2, 2.2, 2.5, etc.).

[0042] Preferably, in the spreadability evaluation, the score of standard product 1 is 7.5-8.5 (for example, it can be 7.5, 7.8, 8, 8.2, 8.5, etc.), the score of standard product 3 is 6.5-7.5 (for example, it can be 6.5, 6.8, 7, 7.2, 7.5, etc.), the score of standard product 4 is 0-1 (for example, it can be 0, 0.2, 0.5, 0.8, 1, etc.), and the score of standard product 1 is higher than that of standard product 3.

[0043] Preferably, in the slippery evaluation among the evaluation indicators during use, the score of standard product 1 is 2.5-3.5 (for example, it can be 2.5, 2.8, 3, 3.2, 3.5, etc.), the score of standard product 2 is 4.5-5.5 (for example, it can be 4.5, 4.8, 5, 5.2, 5.5, etc.), the score of standard product 3 is 3.5-4.5 (for example, it can be 3.5, 3.8, 4, 4.2, 4.5, etc.), and the score of standard product 4 is 0-1 (for example, it can be 0, 0.2, 0.5, 0.8, 1, etc.), and the score of standard product 2 is higher than that of standard product 3, and the score of standard product 3 is higher than that of standard product 1.

[0044] Preferably, in the evaluation of moisturizing feeling, the score of standard product 1 is 2.5-3.5 (for example, it can be 2.5, 2.8, 3, 3.2, 3.5, etc.), the score of standard product 2 is 6.5-7.5 (for example, it can be 6.5, 6.8, 7, 7.2, 7.5, etc.), the score of standard product 3 is 4.5-5.5 (for example, it can be 4.5, 4.8, 5, 5.2, 5.5, etc.), and the score of standard product 4 is 0-1 (for example, it can be 0, 0.2, 0.5, 0.8, 1, etc.).

[0045] Preferably, in the refreshing feeling evaluation, the score of standard product 1 is 7-8 (for example, it can be 7, 7.2, 7.5, 7.8, 8, etc.), the score of standard product 2 is 2.5-3.5 (for example, it can be 2.5, 2.8, 3, 3.2, 3.5, etc.), the score of standard product 3 is 4.5-5.5 (for example, it can be 4.5, 4.8, 5, 5.2, 5.5, etc.), and the score of standard product 4 is 0-1 (for example, it can be 0, 0.2, 0.5, 0.8, 1, etc.).

[0046] Preferably, in the absorption rate evaluation, the score of standard product 1 is 6.5-7.5 (for example, it can be 6.5, 6.8, 7, 7.2, 7.5, etc.), the score of standard product 2 is 3.5-4.5 (for example, it can be 3.5, 3.8, 4, 4.2, 4.5, etc.), the score of standard product 3 is 8-9 (for example, it can be 8, 8.2, 8.5, 8.8, 9, etc.), and the score of standard product 4 is 0-1 (for example, it can be 0, 0.2, 0.5, 0.8, 1, etc.).

[0047] Preferably, in the glossiness evaluation, the score of standard product 1 is 4.5-5.5 (for example, it can be 4.5, 4.8, 5, 5.2, 5.5, etc.), the score of standard product 2 is 7.5-8.5 (for example, it can be 7.5, 7.8, 8, 8.2, 8.5, etc.), and the score of standard product 4 is 5.5-6.5 (for example, it can be 5.5, 5.8, 6, 6.2, 6.5, etc.).

[0048] Preferably, in the slippery evaluation among the post-use evaluation indicators, the score of standard product 1 is 6-7 (for example, it can be 6, 6.2, 6.5, 6.8, 7, etc.), the score of standard product 2 is 2.5-3.5 (for example, it can be 2.5, 2.8, 3, 3.2, 3.5, etc.), the score of standard product 3 is 8-9 (for example, it can be 8, 8.2, 8.5, 8.8, 9, etc.), and the score of standard product 4 is 0-1 (for example, it can be 0, 0.2, 0.5, 0.8, 1, etc.).

[0049] Preferably, in the softness evaluation, the score of standard product 1 is 5.5-6.5 (for example, it can be 5.5, 5.8, 6, 6.2, 6.5, etc.), the score of standard product 2 is 7.5-8.5 (for example, it can be 7.5, 7.8, 8, 8.2, 8.5, etc.), the score of standard product 3 is 4.5-5.5 (for example, it can be 4.5, 4.8, 5, 5.2, 5.5, etc.), the score of standard product 4 is 2.5-3.5 (for example, it can be 2.5, 2.8, 3, 3.2, 3.5, etc.), and the score of standard product 1 is higher than that of standard product 3.

[0050] Preferably, in the stickiness evaluation, the score of standard product 1 is 2.5-3.5 (for example, it can be 2.5, 2.8, 3, 3.2, 3.5, etc.), the score of standard product 2 is 7.5-8.5 (for example, it can be 7.5, 7.8, 8, 8.2, 8.5, etc.), the score of standard product 3 is 1.5-2.5 (for example, it can be 1.5, 1.8, 2, 2.2, 2.5, etc.), the score of standard product 4 is 9-10 (for example, it can be 9, 9.2, 9.5, 9.8, 10, etc.), and the score of standard product 1 is higher than that of standard product 3.

[0051] Preferably, in the evaluation of the retention feeling, the score of standard product 1 is 1.5-2.5 (for example, it can be 1.5, 1.8, 2, 2.2, 2.5, etc.), the score of standard product 2 is 7.5-8.5 (for example, it can be 7.5, 7.8, 8, 8.2, 8.5, etc.), and the score of standard product 4 is 9-10 (for example, it can be 9, 9.2, 9.5, 9.8, 10, etc.).

[0052] Compared with the prior art, the present invention has at least the following beneficial effects:

[0053] (1) The present invention provides four standard products for sensory evaluation of water-based cosmetics, which can simultaneously meet the skin feel scores in the low, medium and high areas of the skin feel test related parameter scores. The results of the correlation analysis between the sensory index scores of some cosmetics and the measurement values ​​of the skin detection probe show that the device detection values ​​are significantly correlated with the standard product scores, further confirming that the standard product scores are scientific.

[0054] (2) The present invention provides a method for sensory evaluation of aqueous formulations. By using a specific standard as a reference for scoring, the scoring of parameters related to skin feel tests is guided, thereby effectively reducing the subjective scoring differences between different evaluators, improving the reliability of sensory evaluators' evaluation scores, enhancing the credibility of sensory evaluators' scores, significantly improving the stability and repeatability of test data, and at the same time improving the work efficiency of skin feel evaluation tests, and reducing and simplifying the training costs of evaluators. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a comparison chart of the moisturizing test results and scores.

[0056] Figure 2 This is a comparison chart of softness test results and scores.

[0057] Figure 3 This is a comparison chart of gloss test results and scores.

[0058] Figure 4 This is a comparison chart of the refreshing feeling test results and scores. DETAILED DESCRIPTION

[0059] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments. However, the following examples are merely simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

[0060] Example 1

[0061] This embodiment provides a standard sample for sensory evaluation of an aqueous dosage form, including standard sample 1, standard sample 2, standard sample 3, and standard sample 4;

[0062] The composition and mass fractions of Standard 1 are as follows (the percentages involved are by mass):

[0063]

[0064] The composition and mass fractions of Standard 2 are as follows (the percentages involved are by mass):

[0065]

[0066] The composition and mass fractions of Standard 3 are as follows (the percentages involved are by mass):

[0067]

[0068] The composition and mass fractions of Standard 4 are as follows (the percentages involved are by mass):

[0069]

[0070] The corresponding scores of Standard Products 1-4 in each stage of the sensory evaluation of aqueous dosage forms are defined as follows (the following scores are independently scored and discussed by 10 engineers with more than 5 years of formulation experience or more than 2 years of sensory evaluation experience):

[0071]

[0072]

[0073] Test Example 1

[0074] Freshness, moisture, softness and glossiness test

[0075] The standard products 1-4 provided in Example 1 were tested for freshness, moisture, softness, and glossiness:

[0076] Test equipment:

[0077] Skin glossiness tester Glossymeter GL 200 (Courage & Khazaka, Germany);

[0078] Skin elasticity tester Cutometer MPA580 (Courage & Khazaka, Germany);

[0079] Corneometer CM 825 (Courage & Khazaka, Germany)

[0080] Skin oil tester Sebumeter SM815 (Courage & Khazaka, Germany);

[0081] Test environment: 21±1℃, humidity: 50±10%RH

[0082] Testing process:

[0083] (1) Preparation before use: The test site should not come into contact with water for 1-3 hours before use. Before the test, the subjects should clean the inner forearms of both hands. The cleaning method is to wipe them clean with dry tissue paper.

[0084] The test area should be marked on the inside of each forearm. The test area should be at least 4 x 4 cm. Multiple areas can be marked on the same arm, with at least 1 cm between each test area. Before the test, the test subject should sit quietly in a standard room for at least 20 minutes without drinking water or other beverages. The forearm should be exposed and placed in the test position, remaining relaxed.

[0085] (2) Measurement: The sample application area should be randomly distributed on the marked areas of the left and right arms to ensure that all product locations are statistically balanced. Use a syringe to apply 0.05 mL of sample to the 4 x 4 cm area to be tested on the inner side of the arm. Use the fingertips to spread the sample and gently stroke it, making light circular motions at a frequency of 2 circles / s until it is completely absorbed.

[0086] The sample application area was measured using a skin stratum corneum moisture content tester, a skin gloss tester, a skin elasticity tester, and a skin oil tester. Each area was measured at least three times in parallel. The initial value of each sample area was first measured (before the sample was applied). Then, when the sample was applied until completely absorbed, the skin stratum corneum moisture content and oil content were measured using a skin stratum corneum moisture content tester and an oil tester. After 5 minutes, the skin R2 value was measured using a skin elasticity tester, and the skin glossiness was measured using a skin gloss tester.

[0087] Test results:

[0088] (1) Hydrating feeling score during use

[0089] In the area where the standard products were applied, the moisture content of the skin stratum corneum was tested before and after application using the Corneometer CM 825 (Courage & Khazaka, Germany) probe on the four standard products. The test results are shown in the following table:

[0090]

[0091] Compare the moisture content of the skin stratum corneum with the hydration score, as shown in the comparison chart. Figure 1 As shown, the two sets of data were subjected to correlation analysis (as shown in the table below), and the significance result was <0.05, indicating that the two sets of data were significantly correlated.

[0092]

[0093]

[0094] (2) Softness score 2 minutes after use

[0095] In the area where the standard products were applied, the skin elasticity R2 values ​​of the four standard products were tested before and after application using a Cutometer MPA580 (Courage & Khazaka, Germany). The test results are shown in the following table:

[0096]

[0097] Compare the skin elasticity R2 value with the softness score, as shown in the comparison chart. Figure 2 As shown, the two sets of data were subjected to correlation analysis (as shown in the table below), and the significance result was <0.05, indicating that the two sets of data were significantly correlated.

[0098]

[0099] (3) Glossiness score 2 minutes after use

[0100] In the area where the standard products were applied, the skin glossiness of the four standard products was tested before and after application using a Glossymeter GL 200 (Courage & Khazaka, Germany). The test results are shown in the following table:

[0101]

[0102]

[0103] Compare the skin glossiness with the glossiness score, as shown in the comparison chart. Figure 3 As shown, the two sets of data were subjected to correlation analysis (as shown in the table below), and the significance result was <0.05, indicating that the two sets of data were significantly correlated.

[0104]

[0105] (4) Rating of refreshing feeling after use

[0106] In the area where the standard products were applied, the skin oil content of the four standard products was tested before and after application using the skin oil tester Sebumeter SM815 (Courage & Khazaka, Germany). The test results are shown in the following table:

[0107]

[0108] Compare the oil content and refreshing feeling score after use, as shown in the comparison chart. Figure 4 As shown, the two sets of data were subjected to correlation analysis (as shown in the table below), and the significance result was <0.05, indicating that the two sets of data were significantly correlated.

[0109]

[0110]

[0111] The results showed that the skin stratum corneum moisture content, skin elasticity R2 value, skin glossiness, and skin oil content measured by the equipment were correlated with the standard product's hydration, softness, glossiness, and freshness scores. The two sets of data were subjected to correlation analysis, and the significance result was <0.05, indicating that the two sets of data were significantly correlated, that is, the values ​​measured by the equipment were significantly correlated with the standard product scores, and the standard product scores were scientific.

[0112] Test Example 2

[0113] The evaluators were trained on the standard products provided in Example 1 and the corresponding scoring definitions in the indicators of each stage of the sensory evaluation of aqueous formulations. The trained evaluators conducted a sensory evaluation on an aqueous formulation sample (Ice Soft Skin Essence).

[0114] Test environment: Temperature: 21.2°C, Humidity: 52.7% RH.

[0115] Testing process:

[0116] (1) Before use, use a syringe to take 0.2 mL of sample on a glass slide, observe the brightness, consistency and other indicators, and evaluate and score each indicator on a scale of 0-10 as required and record the score;

[0117] (2) During use, use a syringe to take 0.05 mL of sample and apply it to the 4*4 cm test area on the inside of the arm. Use the fingertips to spread the sample and gently stroke it, making light circles at a frequency of 2 circles / s until it is completely absorbed. As required, evaluate and score each indicator on a scale of 0-10 and record the score.

[0118] (3) After the sample is completely absorbed for 2 minutes, evaluate and score each indicator on a scale of 0-10 and record the score.

[0119] Testing principles:

[0120] (1) The evaluation follows the principle of equal volume, that is, each evaluator takes the same sample volume of approximately 0.05 mL each time;

[0121] (2) The evaluation follows the principle of independence, that is, each evaluator must independently complete each sample and evaluation, and evaluators cannot communicate with each other;

[0122] (3) The evaluation follows the blind sample principle, that is, each evaluator conducts blind sample evaluation without knowing the sample information.

[0123] A total of 10 evaluators who had received training in the sensory evaluation of cosmetics-aqueous formulations participated in the evaluation. They followed the evaluation steps and used standard products for comparison and scoring during the scoring process. The test scoring results are shown in Table 1.

[0124] Table 1

[0125]

[0126] In addition, 10 evaluators who had not received training in the sensory evaluation of cosmetics-aqueous formulations were selected to participate in the blind sample evaluation (i.e., four aqueous formulation samples were provided for evaluation, one of which was the Ice Soft Skin Serum, and there was no reference to the standard sample during the evaluation process of the four samples). The test was carried out according to the evaluation steps, and the test scoring results are shown in Table 2.

[0127] Table 2

[0128]

[0129]

[0130] At the same time, the equipment was used to evaluate the skin moisture content, elasticity, glossiness and oil content of the Ice Soft Skin Essence. The results are shown in Table 3.

[0131] Table 3

[0132] Test items data Skin stratum corneum moisture content before use (CU) 17.28 Skin stratum corneum moisture content during use (CU) 13.52 Skin elasticity R2 value before use 68.69 Skin elasticity R2 value 2 minutes after use 74.62 Skin radiance before use 5.58 Skin glossiness 2 minutes after use 8.91 Skin oil content before use 1 Skin oil content 2 minutes after use 12

[0133] Based on the data in Tables 1-3, it can be concluded that the standard deviations of sensory evaluators' scores for each parameter, calculated using the four standards provided by the present invention as a reference, were all less than 1.35, indicating low dispersion in the scoring data and low variability in individual scores. This also further reduces the standard deviation compared to subjective scoring. Furthermore, when compared with the values ​​measured by the device, the final measured scores were within the corresponding range of the device's test values. These results demonstrate that the standards provided by the present invention are suitable for sensory evaluation testing.

[0134] The applicant declares that the above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention fall within the scope of protection and disclosure of the present invention.

Claims

1. A standard product for sensory evaluation of aqueous dosage forms, characterized in that: The standard comprises a combination of at least two of standard 1, standard 2, standard 3 or standard 4; The standard 1 includes water, butylene glycol, sodium hyaluronate, β-glucan and 1,2-pentanediol; The standard 2 includes water, acrylates / C10-30 alkyl acrylate crosspolymer, glycerin, 1,2-pentanediol, 1,2-hexanediol, caprylyl glycol, xanthan gum, methyl gluceth-20, fructose, glyceryl glucoside and aminomethyl propanol; The standard 3 includes water, butylene glycol, ammonium acryloyldimethyltaurate / VP copolymer, t-butyl alcohol, dimethicone, decyl glucoside and polysilicone-11; The standard 4 includes water and panthenol.

2. The standard product according to claim 1, characterized in that The standard product 1 comprises, by mass, 82-88 parts of water, 2-4 parts of butylene glycol, 0.1-0.2 parts of sodium hyaluronate, 1.5-2.5 parts of β-glucan and 6-8 parts of 1,2-pentanediol.

3. The standard product according to claim 1 or 2, characterized in that The standard product 2 comprises, by mass, 70-76 parts of water, 0.1-0.2 parts of acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer, 8-12 parts of glycerin, 3-6 parts of 1,2-pentanediol, 0.08-0.12 parts of 1,2-hexanediol, 0.2-0.3 parts of caprylyl glycol, 0.1-0.2 parts of xanthan gum, 2-4 parts of methyl gluceth-20, 4-6 parts of fructose, 2-3 parts of glyceryl glucoside and 0.08-0.09 parts of aminomethyl propanol.

4. The standard according to any one of claims 1 to 3, characterized in that The standard product 3 comprises, by mass, 90-94 parts of water, 5-7 parts of butylene glycol, 0.05-0.07 parts of ammonium acryloyldimethyltaurate / VP copolymer, 0.2-0.3 parts of tert-butyl alcohol, 0.3-0.5 parts of polydimethylsiloxane, 0.25-0.45 parts of decyl glucoside and 0.04-0.06 parts of polysilicone-11; Preferably, the standard product 4 comprises 85-90 parts of water and 4-6 parts of panthenol by mass.

5. The standard according to any one of claims 1 to 4, characterized in that The sensory evaluation index includes any one or a combination of at least two of the pre-use evaluation index, the during-use evaluation index, or the post-use evaluation index; The pre-use evaluation index includes any one or a combination of at least two of brightness, transparency or fluidity; The evaluation index during use includes any one or a combination of at least two of spreadability, slippery feeling, moist feeling, refreshing feeling or absorption speed; The post-use evaluation index includes any one or a combination of at least two of glossiness, slippery feeling, softness, stickiness or retention feeling.

6. Use of the standard substance for sensory evaluation of aqueous formulations according to any one of claims 1 to 5 in sensory evaluation of aqueous formulation cosmetics.

7. A method for sensory evaluation of aqueous cosmetics, characterized in that: The method comprises: setting evaluation indicators, assigning scores to the standard sample for sensory evaluation of the aqueous formulation according to any one of claims 1 to 5 in each evaluation indicator to obtain a scoring standard; and scoring the aqueous formulation cosmetic to be tested according to the scoring standard.

8. The method according to claim 7, characterized in that On a scale of 0-10, in the brightness evaluation, the score of Standard 1 was 7.5-8.5, and the score of Standard 3 was 2-3; Preferably, in the transparency evaluation, the score assigned to standard product 1 is 8.5-9.5, and the score assigned to standard product 3 is 2.5-3.5; Preferably, in the fluidity evaluation, the score assigned to standard product 1 is 8.5-9.5, the score assigned to standard product 2 is 4.5-5.5, and the score assigned to standard product 3 is 1.5-2.

5.

9. The method according to claim 7 or 8, characterized in that In the spreadability evaluation, the score of standard product 1 was 7.5-8.5, the score of standard product 3 was 6.5-7.5, and the score of standard product 4 was 0-1, and the score of standard product 1 was higher than that of standard product 3; Preferably, in the evaluation of slippery sensation during use, the score assigned to standard product 1 is 2.5-3.5, the score assigned to standard product 2 is 4.5-5.5, the score assigned to standard product 3 is 3.5-4.5, and the score assigned to standard product 4 is 0-1, and the score assigned to standard product 2 is higher than that of standard product 3, and the score assigned to standard product 3 is higher than that of standard product 1; Preferably, in the moisturizing evaluation, the score of standard product 1 is 2.5-3.5, the score of standard product 2 is 6.5-7.5, the score of standard product 3 is 4.5-5.5, and the score of standard product 4 is 0-1; Preferably, in the refreshing feeling evaluation, the score of standard product 1 is 7-8, the score of standard product 2 is 2.5-3.5, the score of standard product 3 is 4.5-5.5, and the score of standard product 4 is 0-1; Preferably, in the absorption rate evaluation, the score assigned to standard product 1 is 6.5-7.5, the score assigned to standard product 2 is 3.5-4.5, the score assigned to standard product 3 is 8-9, and the score assigned to standard product 4 is 0-1.

10. The method according to any one of claims 7 to 9, characterized in that: In the glossiness evaluation, the score of standard product 1 was 4.5-5.5, the score of standard product 2 was 7.5-8.5, and the score of standard product 4 was 5.5-6.5; Preferably, in the slippery evaluation among the post-use evaluation indicators, the score assigned to standard product 1 is 6-7, the score assigned to standard product 2 is 2.5-3.5, the score assigned to standard product 3 is 8-9, and the score assigned to standard product 4 is 0-1; Preferably, in the softness evaluation, the score of standard product 1 is 5.5-6.5, the score of standard product 2 is 7.5-8.5, the score of standard product 3 is 4.5-5.5, and the score of standard product 4 is 2.5-3.5, and the score of standard product 1 is higher than that of standard product 3; Preferably, in the stickiness evaluation, the score of standard product 1 is 2.5-3.5, the score of standard product 2 is 7.5-8.5, the score of standard product 3 is 1.5-2.5, the score of standard product 4 is 9-10, and the score of standard product 1 is higher than that of standard product 3; Preferably, in the evaluation of the lingering sensation, the score assigned to standard product 1 is 1.5-2.5, the score assigned to standard product 2 is 7.5-8.5, and the score assigned to standard product 4 is 9-10.

Images