JP7477375B2 - Evaluation method for sheet cosmetics - Google Patents

Description

The present invention relates to a method for evaluating sheet cosmetics.

Conventionally, various types of sheet cosmetics, such as body sheet cosmetics and face sheet cosmetics, have been sold (Patent Documents 1 and 2).

Known types of sheet cosmetics include (a) skin cleansing sheet cosmetics, the main purpose of which is to wipe away sweat, sebum stains, dead skin cells, etc., thereby reducing stickiness on the skin and providing a refreshing feeling when used, and (b) makeup removing sheet cosmetics, the main purpose of which is to wipe away makeup stains from the skin, i.e., to remove makeup.

Sheet cosmetics are cosmetics formed by impregnating a sheet substrate with a liquid cosmetic composition. Sheet cosmetics are widely used not only because they are effective at removing sweat, sebum, dead skin cells, makeup, etc., but also because they are easy to use and portable.

Patent Publication 2010-241758 Patent Publication 2018-052885

However, there is currently no known method for evaluating sheet cosmetics with high reliability that uses the mood factors of users of the sheet cosmetics as indicators.

The present invention has been made in consideration of the above problems, and its purpose is to provide a highly reliable method for evaluating sheet cosmetics using the mood factors of the user of the sheet cosmetics as indicators.

That is, the present invention includes the following inventions.
(1) A method for evaluating a sheet cosmetic, comprising a step of evaluating the sheet cosmetic using at least one mood factor selected from the group consisting of a refreshing factor, a relaxing factor, and an energizing factor as an index.
(2) The method for evaluating at least one of the mood factors, wherein the correlation coefficient (r) between the score of the mood factor and the positive emotion score of the Japanese version of the PANAS is 0.400 or more.
(3) The evaluation method according to (1) or (2), wherein the refresh factor includes at least one evaluation item selected from the group consisting of "refreshing,""invigorating,""cool,""comfortable,""refreshing," and "refreshing."
(4) The evaluation method according to any one of (1) to (3), wherein the relaxation factor includes at least one evaluation item selected from the group consisting of "feeling at ease,""feelingcomforted,""gentle,""calming," and "relaxed."
(5) The evaluation method according to any one of (1) to (4), wherein the vitality factor includes at least one evaluation item selected from the group consisting of "positive,""cheerful," and "motivated."
(6) An evaluation tool for evaluating a sheet cosmetic using at least one mood factor selected from the group consisting of a refreshing factor, a relaxing factor, and an energizing factor as an index.

The present invention has the effect of providing a highly reliable method for evaluating sheet cosmetics using the mood factors of the user of the sheet cosmetics as indicators.

1 is an example of an evaluation tool for the sheet cosmetic of the present invention. 1 is a graph showing Δ scores obtained as a result of carrying out the evaluation method for the sheet cosmetic of the present invention. 1 is a graph showing the Δ scores obtained as a result of carrying out a method similar to the evaluation method for the sheet cosmetic of the present invention using hand towels.

An example of an embodiment of the present invention will be described in detail below, but the present invention is not limited to this. Unless otherwise specified in this specification, "A to B" representing a numerical range means "A or more, B or less."

1. Evaluation method for the sheet cosmetic of the present invention
The method for evaluating a sheet cosmetic of the present invention includes a step of evaluating the sheet cosmetic using as an index at least one mood factor selected from the group consisting of a refreshing factor, a relaxing factor, and an energizing factor.

In addition to the visible effects of improving the user's skin condition and removing skin stains, the use of cosmetics is thought to have an effect on the user's mood.

In particular, sheet cosmetics are expected to have a large impact on the mood of the user, depending on the purpose and scene of use of the sheet cosmetics.

However, the mood state of a user is a vague indicator, and various items and factors that indicate the mood state are conceivable. For this reason, up to now, no reliable method for evaluating sheet cosmetics using the mood factors of a user as indicators has been known.

The evaluation method of the present invention has the above-mentioned configuration, and thus has the advantage of being able to provide a highly reliable evaluation method for sheet cosmetics, even though it uses the mood factors of the user of the sheet cosmetics as indicators.

Below, we will explain each component included in the evaluation method for the sheet cosmetic of the present invention in order.

[Sheet cosmetics]
The sheet cosmetic is a sheet-like cosmetic formed by impregnating a sheet substrate with a liquid cosmetic composition.

There are no particular limitations on the sheet substrate, so long as it is a sheet-like support that can be impregnated with the cosmetic composition. Woven fabric and/or nonwoven fabric are preferred as the sheet substrate.

The cosmetic composition is not particularly limited, but examples include compositions containing water, a buffer, a pH adjuster, a surfactant, a cooling agent, a lubricant, and/or a fragrance, etc.

[Mood factors]
In the evaluation method of the present invention, the "mood factor" is not particularly limited, but examples thereof include a refreshment factor, a relaxation factor, and an energy factor. The "mood factor" includes at least one factor selected from the group consisting of a refreshment factor, a relaxation factor, and an energy factor, preferably includes at least two factors selected from the group, and particularly preferably includes all three factors selected from the group. In other words, it is particularly preferable that the evaluation method of the present invention includes a step of evaluating the sheet cosmetic using at least the refreshment factor, the relaxation factor, and the energy factor as indicators. This configuration has the advantage of being able to provide a highly reliable evaluation method for sheet cosmetics.

It can also be said that a mood factor includes at least one evaluation item and is formed from at least one evaluation item.

[Refresh factor]
In the evaluation method of the present invention, the evaluation items constituting the "refreshment factor" are not particularly limited, but examples include "refreshing,""invigorating,""cool,""comfortable,""refreshing," and "refreshing."

The "refresh factor" preferably includes at least one evaluation item selected from the group consisting of "refreshing," "refreshing," "cool," "comfortable," "refreshing," and "refreshing," more preferably includes at least two evaluation items selected from the group, more preferably includes at least three evaluation items selected from the group, even more preferably includes at least four evaluation items selected from the group, even more preferably includes at least five evaluation items selected from the group, particularly preferably includes all six evaluation items selected from the group, and most preferably includes all six evaluation items selected from the group. This configuration has the advantage of being able to provide a highly reliable method for evaluating sheet cosmetics.

[Relaxation factor]
In the evaluation method of the present invention, the evaluation items that form the "relaxation factor" are not particularly limited, but examples include "feeling at ease,""feelingcomforted,""feelinggentle,""feelingcalm," and "feeling relaxed."

The "relaxation factor" preferably includes at least one evaluation item selected from the group consisting of "relieved," "soothing," "gentle," "calming," and "relaxed," more preferably includes at least two evaluation items selected from the group, even more preferably includes at least three evaluation items selected from the group, even more preferably includes at least four evaluation items selected from the group, particularly preferably includes all five evaluation items selected from the group, and most preferably includes all five evaluation items selected from the group. This configuration has the advantage of being able to provide a highly reliable method for evaluating sheet cosmetics.

[Vitality factor]
In the evaluation method of the present invention, the evaluation items constituting the "vitality factor" are not particularly limited, but examples thereof include "positive,""cheerful," and "motivated."

The "vitality factor" preferably includes at least one evaluation item selected from the group consisting of "positive," "cheerful," and "motivated," more preferably includes at least two evaluation items selected from the group, even more preferably includes all three evaluation items selected from the group, and particularly preferably includes all three evaluation items selected from the group. This configuration has the advantage of being able to provide a highly reliable method for evaluating sheet cosmetics.

[PANAS]
The "mood factor" in the evaluation method of the present invention preferably shows a positive correlation with positive emotion, one of the two factors of the Japanese version of PANAS (Toku Sato and Asako Yasuda (2001), Creation of the Japanese version of PANAS. Personality Psychology Research, 9, 138-139.). Specifically, in the score of the user's mood state obtained using each of the mood factor and positive emotion as an index, the correlation coefficient (r) between the mood factor score and the positive emotion score of the Japanese version of PANAS is preferably 0.400 or more, more preferably 0.410 or more, more preferably 0.430 or more, more preferably 0.450 or more, more preferably 0.470 or more, more preferably 0.500 or more, more preferably 0.550 or more, more preferably 0.600 or more, even more preferably 0.700 or more, and particularly preferably 0.750 or more.

When the evaluation method of the present invention uses two or more mood factors as indices, it is preferable that the score of at least one mood factor shows a positive correlation with the score of positive emotion on the Japanese version of PANAS, and it is particularly preferable that the scores of all mood factors show a positive correlation with the score of positive emotion on the Japanese version of PANAS.

(a) For one or more mood factors selected from the group consisting of refreshment factors, relaxation factors, and vitality factors, it is preferable that the correlation coefficient between the mood factor score and the positive emotion score of the Japanese version of the PANAS is 0.400 or more; (b) for two or more mood factors selected from the group, it is more preferable that the correlation coefficient between each mood factor score and the positive emotion score of the Japanese version of the PANAS is 0.400 or more; and (c) for all three mood factors selected from the group, it is even more preferable that the correlation coefficient between each mood factor score and the positive emotion score of the Japanese version of the PANAS is 0.400 or more.

When the evaluation method of the present invention is carried out multiple times, including after use of the sheet cosmetic, (a) at least after use of the sheet cosmetic, it is preferable that the correlation coefficient between the mood factor score and the positive emotion score of the Japanese version of PANAS is 0.400 or more, (b) immediately after use of the sheet cosmetic, it is more preferable that the correlation coefficient between the mood factor score and the positive emotion score of the Japanese version of PANAS is 0.400 or more, (c) immediately after use of the sheet cosmetic and 5 minutes after use, it is more preferable that the correlation coefficient between the mood factor score and the positive emotion score of the Japanese version of PANAS is 0.400 or more, and (d) after use of the sheet cosmetic It is more preferable that the correlation coefficient between the mood factor score and the positive emotion score of the Japanese version of PANAS is 0.400 or more immediately after use, 5 minutes after use, and 10 minutes after use, (e) it is even more preferable that the correlation coefficient between the mood factor score and the positive emotion score of the Japanese version of PANAS is 0.400 or more immediately after use, 5 minutes after use, 10 minutes after use, and 20 minutes after use of the sheet cosmetic, and (f) it is particularly preferable that the correlation coefficient between the mood factor score and the positive emotion score of the Japanese version of PANAS is 0.400 or more before use, immediately after use, 5 minutes after use, 10 minutes after use, and 20 minutes after use of the sheet cosmetic.

[Step of evaluating sheet cosmetics using at least one mood factor as an index]
A specific example of a process for evaluating a sheet cosmetic material using at least one mood factor as an index will be described.

The "step of evaluating sheet cosmetics using at least one mood factor as an index" is not particularly limited, but may include, for example, (i) step 1 of evaluating the mood state of a user with respect to evaluation items included in at least one mood factor, (ii) step 2 of converting the evaluation results into a score using numbers or letters, (iii) step 3 of calculating a score for the mood factor using the obtained scores for the evaluation items, and (iv) step 4 of evaluating the sheet cosmetics based on the obtained scores for the mood factor.

In step 1, the evaluation of the user's mood state with respect to the evaluation items is not particularly limited, but is preferably performed on a scale of 2 to 30, more preferably on a scale of 3 to 20, even more preferably on a scale of 3 to 10, particularly preferably on a scale of 3 to 7, and most preferably on a scale of 5. A specific example of the evaluation of the user's mood state with respect to the evaluation items on a scale of 5 is when the user evaluates the mood state with respect to the evaluation items on a 5-scale scale of "not feeling at all," "feeling a little," "feeling moderately," "feeling strongly," and "feeling very strongly."

The method for evaluating the mood state in step 1 is not particularly limited, but may be, for example, a method in which the user answers a questionnaire or medical questionnaire. Specific examples of such a method include a method in which the user answers a questionnaire or medical questionnaire printed on paper with a writing instrument, or a method in which the user answers a questionnaire or medical questionnaire displayed on the display unit of an electronic device via an input unit of the electronic device.

In step 2, the evaluation results obtained in step 1 are scored using numbers or letters to obtain scores for the evaluation items. As described above, when the user's mood state regarding the evaluation items is evaluated on a five-point scale, a specific example of scoring would be to score the obtained evaluation results as "1" for "not at all," "2" for "a little," "3" for "strongly," "4" for "very strongly," and "5" for "very strongly."

When there are multiple users and one mood factor consisting of one evaluation item is used as the index, an example embodiment is to obtain a score for the evaluation item for each user based on steps 1 and 2, and then use the average of the obtained scores as the score for that evaluation item.

In step 3, if the mood factor includes only one evaluation item (i.e., is formed from only one evaluation item), the score of the evaluation item obtained in step 2 becomes the score of the mood factor as it is. In step 3, if the mood factor includes multiple evaluation items (i.e., is formed from multiple evaluation items), an embodiment is that after obtaining the scores for each of the multiple evaluation items in steps 1 and 2, the total value of the scores of the multiple evaluation items becomes the score of the mood factor.

When there is one user and multiple mood factors, each consisting of one evaluation item, are to be evaluated, steps 1 to 3 can be used to obtain scores for each of the multiple mood factors.

In step 4, the evaluation criteria for the sheet cosmetic based on the mood factor scores are not particularly limited and may be set appropriately depending on the desired performance, effects, and efficacy of the sheet cosmetic. If a sheet cosmetic with an excellent feeling of refreshment is desired, the evaluation step may be carried out using the refresh factor scores as the evaluation criteria.

The evaluation method of the present invention may include a "step of evaluating the sheet cosmetic using at least one mood factor as an index" at least once after use of the sheet cosmetic. The evaluation method of the present invention preferably includes a "step of evaluating the sheet cosmetic using at least one mood factor as an index" (a) after use of the sheet cosmetic, (b) preferably immediately after use of the sheet cosmetic, (c) more preferably before use and immediately after use of the sheet cosmetic, (d) more preferably before use, immediately after use and 5 minutes after use of the sheet cosmetic, (e) even more preferably before use, immediately after use, 5 minutes after use and 10 minutes after use of the sheet cosmetic, and (f) particularly preferably before use, immediately after use, 5 minutes after use, 10 minutes after use and 20 minutes after use of the sheet cosmetic.

The present invention may also include, for example, the following configurations:
A first scoring step of scoring a mood state of a user regarding at least one mood factor before use of the sheet cosmetic;
a second scoring step of scoring the mood state of the user regarding at least one of the mood factors after use of the sheet cosmetic;
and an evaluation step of evaluating the sheet cosmetic by comparing the scores for at least one of the mood factors obtained in the first scoring step and the second scoring step,
The method for evaluating a sheet cosmetic, wherein the mood factor is at least one selected from the group consisting of a refreshing factor, a relaxing factor, and an energizing factor.

The evaluation method of the present invention will be described below in the case where it includes a "step of evaluating the sheet cosmetic using at least one mood factor as an index" before and after use of the sheet cosmetic. In this case, a Δ score is calculated by subtracting the mood factor score before use of the sheet cosmetic from the mood factor score after use of the sheet cosmetic, and the sheet cosmetic can be evaluated using this Δ score. According to this method, a sheet cosmetic having the desired performance, effect, and efficacy can be easily obtained.

A case will be described in which a "step of evaluating the sheet cosmetic using at least one mood factor as an index" is included before and after use of the sheet cosmetic. In this case, some kind of stimulus may be given to the user before using the sheet cosmetic, or the user may perform some kind of exercise (for example, a certain number of squats). This configuration has the following advantages (1) and (2): (1) the advantage that, even when the sheet cosmetic is evaluated by multiple users, the mood state of each user before using the sheet cosmetic can be made closer to uniform; and (2) the advantage that, even when the sheet cosmetic is evaluated multiple times, the mood state before using the sheet cosmetic in each evaluation can be made closer to uniform.

The evaluation method of the present invention may include a step of "evaluating the sheet cosmetic using at least one mood factor as an index" two or more times before use of the sheet cosmetic. In this case, the user may be given some kind of stimulus or may perform some kind of exercise (for example, a certain number of squats) between the two evaluations before use of the sheet cosmetic.

When evaluating sheet cosmetics using the above-mentioned two factors of the Japanese version of PANAS as indicators, the mood factors in steps 1 to 4 can be replaced with the two factors of the Japanese Cancer PANAS to obtain scores for each of the two factors in a similar manner, and the sheet cosmetics can be evaluated.

2. Evaluation Tool for the Sheet Cosmetic of the Present Invention
The evaluation tool for sheet cosmetics of the present invention is an evaluation tool for evaluating sheet cosmetics using at least one mood factor selected from the group consisting of a refreshment factor, a relaxation factor, and an energy factor as an index.

The evaluation tool for sheet cosmetics is not particularly limited, and examples include a paper surface on which a questionnaire (medical questionnaire) as shown in FIG. 1 is printed, or an evaluation device using an electronic device or the like that can display a questionnaire (medical questionnaire) as shown in FIG. 1.

In the following, an example of an evaluation tool will be described using a paper questionnaire. Figure 1 is an example of an evaluation tool for a sheet cosmetic according to one embodiment of the present invention. Specifically, Figure 1 is a questionnaire for having a user evaluate the mood state before or after using the sheet cosmetic. The upper left corner of Figure 1 shows questions asking about the user's mood state for each evaluation item, the lower left corner of Figure 1 shows 28 evaluation items, and the right side of Figure 1 shows the evaluation results for each evaluation item in association with a score.

For example, at least once before and once after using the sheet cosmetic, the user answers questions about the user's mood state for the 28 evaluation items using a questionnaire sheet on which the questionnaire in FIG. 1 is printed and a writing instrument. Because the evaluation results and scores for each evaluation item are already associated, the user's mood state for the 28 evaluation items can be scored from the results of the questionnaire sheet on which the questionnaire in FIG. 1 is printed.

The evaluation device may be configured to include, for example, a display unit that displays the mood factors, an input unit through which the subject inputs information about the mood factors, an evaluation unit that evaluates the sheet cosmetic using the input mood factors as indicators, and an output unit that outputs the evaluation results. The display unit and the input unit may be configured in the same way (for example, a touch panel type tablet PC or smartphone). The output unit may be a display unit (display) that displays the evaluation results, or a printing means that prints and outputs the results. Various known technologies may be used to configure such an evaluation device. The evaluation device may also be one that can be connected to a so-called network.

The above-mentioned evaluation device may be realized by a computer. In this case, the control program for the evaluation device, which causes the computer to operate as each unit (software element) of the evaluation device to realize the evaluation device on the computer, and the computer-readable recording medium on which the control program is recorded, also fall within the scope of the present invention.

That is, the above-mentioned evaluation device (particularly, the evaluation unit) may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like, or may be realized by software. In the latter case, the evaluation unit includes a computer that executes instructions of a program, which is software that realizes each function. This computer includes, for example, at least one processor (control device) and at least one computer-readable recording medium that stores the program. The object of the present invention is achieved by the processor reading the program from the recording medium and executing it in the computer. The processor may be, for example, a CPU (Central Processing Unit). The recording medium may be a "non-transient tangible medium," such as a ROM (Read Only Memory), tape, disk, card, semiconductor memory, programmable logic circuit, or the like. The device may further include a RAM (Random Access Memory) that expands the program. The program may be supplied to the computer via any transmission medium (such as a communication network or broadcast waves) that can transmit the program. The present invention may also be realized in the form of a data signal embedded in a carrier wave, in which the program is embodied by electronic transmission.

The contents described in each of the above items can be appropriately applied to other items. The present invention is not limited to the above-mentioned embodiments, and various modifications are possible within the scope of the claims. Therefore, embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention.

All of the academic and patent literature cited herein is hereby incorporated by reference.

The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples.
[Experiment 1: Determination of mood factors and evaluation items included in the mood factors]
A method for determining mood factors and the evaluation items included in the mood factors will now be specifically described. As the sheet cosmetic, a sheet cosmetic was used in which a sheet substrate was impregnated with a cosmetic composition having a menthol concentration of 0.5% and an ethanol concentration of 50%, and containing no fragrance.

First, 20 subjects (users) were asked to use the sheet cosmetic product, and the subjects were asked to freely answer questions about their mood state after using the sheet cosmetic product. From the answers obtained, 28 terms related to mood state were extracted and used as evaluation items.

Next, 83 subjects were asked to use the sheet cosmetic product, and changes in the users' mood states were surveyed on a 5-point scale (1 to 5) regarding 28 evaluation items before, immediately after, 5 minutes after, and 10 minutes after use of the sheet cosmetic product. For the survey, paper with a questionnaire (medical questionnaire) printed on it, as shown in Figure 1, was used.

Next, the scores of the 83 people were averaged for each evaluation item to obtain the score for each evaluation item. Exploratory factor analysis was conducted based on the obtained scores to find three mood factors (common factors) and the evaluation items (observed variables) contained in each of these mood factors. The analysis software used was HAD (Shimizu, 2016), and factors were extracted using the least squares method, followed by promax rotation.

From the results of the exploratory factor analysis, the following mood factors and evaluation items were determined: (a) a "refresh factor" including the evaluation items "clean," "refreshing," "cool," "comfortable," "refreshed," and "invigorated," (b) a "relaxation factor" including the evaluation items "safe," "soothing," "gentle," "calm," and "relaxed," and (c) a "vitality factor" including the evaluation items "positive," "cheerful," and "motivated."

The results of exploratory factor analysis, which can be said to be the strength of the relationship between factors and items, are shown in Table 1 for (a) each mood factor, (b) the factor loading of each evaluation item for each mood factor, (c) the commonality of each evaluation item, and (d) the factor contribution of each mood factor. In Table 1, factor loadings of 0.350 or more are shown in bold. Here, the factor loading indicates the degree to which each mood factor affects each evaluation item, and can also be said to be the strength of the relationship between each mood factor and each evaluation item. The commonality is calculated as the sum of the squares of the factor loadings for each mood factor that explains the evaluation item (observed variable). The commonality indicates the degree to which the entire extracted mood factor explains each evaluation item (observed variable). The factor contribution is calculated as the sum of the squares of the factor loadings of each observed variable in each mood factor. The factor contribution indicates the degree to which each mood factor explains the variation of each evaluation item (observed variable).

[Experiment 2: Validity (factorial validity) and reliability (internal consistency and reproducibility) of mood factors]
For each of the three mood factors determined in Experiment 1 ("refresh factor,""relaxfactor," and "energy factor"), factorial validity, internal consistency, and reproducibility were confirmed.

First, confirmatory factor analysis was performed using the scores for each evaluation item obtained in Experiment 1, assuming a three-factor structure of "refreshing factor," "relaxing factor," and "energy factor." The analysis software used was HAD (Shimizu, 2016). The results of the confirmatory factor analysis were CFI (Comparative Fit Index) = 0.91, RMSEA (Root Mean Square Error of Approximation) = 0.11, and SRMR (Standardized Root Mean Square Residual) = 0.08. RMSEA and SRMR are indices that express the deviation between the model distribution and the true distribution as the amount per degree of freedom. The results of the confirmatory factor analysis confirmed the factorial validity of "refreshing factor," "relaxing factor," and "energy factor."

Next, using the scores for each evaluation item obtained in Experiment 1, Cronbach's alpha coefficient was calculated for each mood factor. The results were alpha = 0.92 for the "refresh factor," alpha = 0.77 for the "relax factor," and alpha = 0.94 for the "energy factor." These results confirmed that each of the mood factors, the "refresh factor," "relax factor," and "energy factor," has internal consistency (internal consistency reliability).

Furthermore, to confirm the reproducibility of the three mood factors ("refreshing factor," "relaxing factor," and "energy factor") determined in Experiment 1 and the evaluation items that make up each mood factor, the same experiment as Experiment 1 was conducted again about one year later. As a result, an exploratory factor analysis was conducted based on the survey results obtained in the repeated Experiment 1, and three mood factors were found, as in the first experiment: (a) a "refreshing factor" consisting of the evaluation items "clean," "refreshing," "cool," "comfortable," "refreshed," and "refreshing," (b) a "relaxing factor" consisting of the evaluation items "relieved," "soothing," "gentle," "calming," and "relaxed," and (c) an "energy factor" consisting of the evaluation items "positive," "cheerful," and "motivated." These results confirmed the reproducibility of the "refreshing factor," "relaxing factor," and "energy factor," as well as the evaluation items that make up each mood factor.

[Experiment 3: Criterion-related validity of mood factors]
A Pearson correlation analysis was performed between the three mood factors determined in Experiment 1 ("refresh factor,""relaxfactor," and "energy factor") and the two factors of the Japanese version of PANAS (positive emotion and negative emotion).

First, the scores of the evaluation items constituting each mood factor, "refreshing factor," "relaxing factor," and "energy factor," were summed to calculate the score for each mood factor. Here, in Experiment 1, along with the changes in the user's mood state regarding the 28 evaluation items, the changes in the user's mood state regarding the 16 evaluation items constituting the two factors of the Japanese version of PANAS (positive emotions: eight items of "lively," "proud," "strong," "resolute," "spirited," "excited," "agile," and "enthusiastic"; negative emotions: eight items of "nervous," "frightened," "confused," "worried," "nervous," "distressed," "ashamed," and "irritated") before, immediately after, 5 minutes after, and 10 minutes after use of the sheet cosmetic were investigated. Next, the scores of the evaluation items constituting each factor were summed for each of the two factors of the Japanese version of PANAS to calculate the score for each factor.

Next, to confirm the correlation between the scores of the mood factors "refreshing factor," "relaxing factor," and "energy factor" and the scores of each of the two factors of the Japanese version of PANAS, Pearson's correlation analysis was performed immediately after use, 5 minutes after use, and 10 minutes after use. The results of the Pearson's correlation analysis immediately after use of the sheet cosmetic are shown in Table 2, the results of the Pearson's correlation analysis 5 minutes after use of the sheet cosmetic are shown in Table 3, and the results of the Pearson's correlation analysis 10 minutes after use of the sheet cosmetic are shown in Table 4.

The results in Tables 2 to 4 show that each of the three mood factors ("Refreshing factor," "Relaxing factor," and "Energy factor") showed a positive correlation with PANAS positive emotions at every measurement time, and that of the three mood factors, the "Energy factor" in particular had a high correlation coefficient with positive emotions. These results show that each of the three mood factors ("Refreshing factor," "Relaxing factor," and "Energy factor") has a valid correlation with the factors of the Japanese version of PANAS, and it can be said that the criterion-related validity of the three mood factors ("Refreshing factor," "Relaxing factor," and "Energy factor") was recognized.

Experiments 1 to 3 show that by using three mood factors ("refreshing factor," "relaxing factor," and "energy factor") composed of specific evaluation items as indicators, it is possible to provide a highly reliable method for evaluating sheet cosmetics, even though the indicators are the user's mood factors.

〔Example〕
The sheet cosmetic of the present invention was evaluated using the three mood factors obtained in Experiment 1 ("refreshing factor", "relaxing factor", and "energy factor") as indices.

Gatsby Ice Deodorant Body Paper Ice Citrus, manufactured by Mandom Corporation, was used as the sheet cosmetic. In addition, a commercially available wet towel (non-woven fabric type), which is not a sheet cosmetic, was used as a control. The subjects were 20 men, and the evaluation method was carried out in an indoor environment at 27°C.

The specific embodiment of the evaluation method was as follows.
(1) Each user was assessed for their mood state on 14 evaluation items ("refreshed,""refreshing,""cool,""comfortable,""refreshed,""refreshing,""relieved,""soothing,""gentle,""calm,""relaxed,""positive,""cheerful," and "motivated") at the following four times. Each evaluation item was rated on a five-point scale: "not at all,""alittle,""moderately,""strongly," and "very strongly."
Timing (a) 5 minutes after entering the room Timing (b) After 3 minutes of squatting ["After exercise" in Figures 2 and 3]
Timing (c) Immediately after use of the sheet cosmetic ["immediately after use" in Figures 2 and 3]
Timing (d): 20 minutes after use of the sheet cosmetic ["20 minutes after use" in Figures 2 and 3]
(2) The obtained evaluation results were scored as follows: “not at all” was scored as “1”, “a little” was scored as “2”, “moderately” was scored as “3”, “strongly” was scored as “4”, and “very strongly” was scored as “5”.
(3) At each timing, the average scores of the 20 subjects were calculated for each of the 14 evaluation items, and this was used as the score for each evaluation item.
(4) The scores for each of the evaluation items, "refreshing,""invigorating,""cool,""comfortable,""refreshed," and "invigorating," were summed to obtain a score for the "refreshment factor." The scores for each of the evaluation items, "relieved,""soothing,""gentle,""calm," and "relaxed," were summed to obtain a score for the "relaxation factor." The scores for each of the evaluation items, "positive,""cheerful," and "motivated," were summed to obtain a score for the "vitality factor."
(5) The delta score for each mood factor was calculated by subtracting the score for the mood factor at timing (a) from the score for each mood factor at timings (b) to (d).
The results for the sheet cosmetic are shown in FIG. 2, and the results for the hand towel (control) are shown in FIG.

Figure 2 is a graph of the Δ scores obtained as a result of carrying out the evaluation method of the sheet cosmetic of the present invention, and Figure 3 is a graph of the Δ scores obtained as a result of carrying out a method similar to the evaluation method of the sheet cosmetic of the present invention using hand towels. In Figures 2 and 3, the Δ scores of the refreshing factors are shown by solid lines, the Δ scores of the relaxing factors are shown by dotted lines, and the Δ scores of the energizing factors are shown by dashed lines.

Figures 2 and 3 show that the evaluation method of the sheet cosmetic of the present invention is a highly reliable evaluation method of sheet cosmetics, and that the sheet cosmetic used provides an excellent effect of providing a refreshing feeling after use.

The present invention can provide a highly reliable method for evaluating sheet cosmetics using the mood factors of the user of the sheet cosmetics as indicators. Therefore, the present invention can be suitably used for developing sheet cosmetics that have a large effect on the mood state of the user.

Claims (6)

The method includes a step of evaluating the sheet cosmetic using at least one mood factor selected from the group consisting of a refreshment factor, a relaxation factor, and an energy factor as an index,
The refreshment factor includes at least five evaluation items selected from the group consisting of "refreshing,""refreshing,""cool,""comfortable,""refreshing," and "refreshing , "
The relaxation factor includes at least two items selected from the group consisting of "feeling at ease,""feelingcomforted,""feelinggentle,""feelingcalm," and "feeling relaxed,"
The method for evaluating a sheet cosmetic, wherein the vitality factors include at least two evaluation items selected from the group consisting of "positive,""cheerful," and "motivated." The evaluation method according to claim 1, wherein the correlation coefficient (r) between the score of at least one of the mood factors and the positive emotion score of the Japanese version of PANAS is 0.400 or more. 3. The evaluation method according to claim 1 or 2, wherein the refresh factor includes, as evaluation items, all six selected from the group consisting of "refreshing,""invigorating,""cool,""comfortable,""refreshing," and "refreshing." The evaluation method according to any one of claims 1 to 3, wherein the relaxation factors include at least three selected from the group consisting of "feeling at ease", "feeling comforted", "feeling gentle", "feeling calm" and "feeling relaxed" as evaluation items. The evaluation method according to any one of claims 1 to 4, wherein the vitality factor includes all three selected from the group consisting of "positive", "cheerful" and "motivated" as evaluation items. An evaluation tool for evaluating a sheet cosmetic using at least one mood factor selected from the group consisting of a refreshment factor, a relaxation factor, and an energy factor as an index,
The method includes an evaluation item for at least one mood factor selected from the group consisting of a refreshment factor, a relaxation factor, and an energy factor,
The refreshment factor includes at least five evaluation items selected from the group consisting of "refreshing,""refreshing,""cool,""comfortable,""refreshing," and "refreshing , "
The relaxation factor includes at least two items selected from the group consisting of "feeling at ease,""feelingcomforted,""feelinggentle,""feeling at ease," and "feeling relaxed,"
The assessment tool , wherein the vitality factor includes at least two assessment items selected from the group consisting of "positive,""cheerful," and "motivated."

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