Method and computing device for evaluating the protective effect of a protective composition to be applied on a keratin substance of a

Abstract

There is provided a method and computing device for evaluating a protective effect of a protective agent composition to be applied on a keratin substance of a user, the method comprising the steps of: applying the protective agent composition on a first test area of the keratin substance of the user; applying an inducer that causes a user's keratin substance to become red and / or uncomfortable over the applied protectant composition; removing the applied protective agent composition and the applied inducer from the first test area; imaging the first test area by an imaging device to obtain a first parameter value; measuring the first test region by a device for testing the transdermal water loss of the keratin substance to obtain a second parameter value; and evaluating a protection effect based on the first parameter value and the second parameter value.

Description

Technical Field

[0001] The present disclosure relates to the field of cosmetics. More specifically, the present disclosure relates to a method and a computing device for evaluating the protective effect of a protectant composition to be applied to a user's keratinous substance. Background Art

[0002] Nowadays, people are increasingly pursuing external beauty. The need for beauty can be achieved through dressing, keratin makeup and various types of hair care. Usually, people apply some protective agent compositions on keratin substances before applying some cosmetic products, hair care products, etc. In the prior art, there is no rapid and effective method for evaluating the protective effect of the protective agent composition to be applied on the keratin substances.

[0003] There is therefore a need for a method for evaluating, in a rapid and more efficient way, the protective effect, more particularly in terms of redness values ​​and discomfort, of a protectant composition to be applied to the keratinous substances of a user. Summary of the invention

[0004] This Summary is provided to introduce selected concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

[0005] Various aspects and features of the disclosure are described in further detail below.

[0006] According to a first aspect of the present disclosure, a method for evaluating the protective effect of a protective agent composition to be applied to a user's keratin material is provided, the method comprising: applying the protective agent composition to a first test area of ​​the user's keratin material; applying an inducer agent that causes redness and / or discomfort to the user's keratin material on the applied protective agent composition; removing the applied protective agent composition and the applied inducer from the first test area; imaging the first test area by an imaging device to obtain a first parameter value;

[0007] The first test area is measured by a device for testing transepidermal water loss of the keratinous material to obtain a second parameter value; and the protective effect is evaluated based on the first parameter value and the second parameter value.

[0008] In one embodiment of the first aspect of the present disclosure, the method further includes: obtaining first self-perceived sensory information about the first test area from the user after the step of removing the applied protectant composition and the applied inducer from the first test area; and evaluating the protective effect based on the first parameter value, the second parameter value and the first self-perceived sensory information.

[0009] In another embodiment of the first aspect of the present disclosure, the method further includes: applying the inducer directly onto a second test area of ​​the user; removing the applied inducer from the second test area; imaging the second test area by the imaging device to obtain a third parameter value; measuring the second test area by a device for testing transepidermal water loss of the keratin material to obtain a fourth parameter value; and evaluating the protective effect by comparing the first parameter value with the third parameter value and comparing the second parameter value with the fourth parameter value.

[0010] In another embodiment of the first aspect of the present disclosure, the method further includes: obtaining first self-perceived sensory information for the first test area after the step of removing the applied protectant composition and the applied inducer from the first test area; obtaining second self-perceived sensory information for the second test area from the user after the step of removing the applied inducer from the second test area; wherein the evaluation step further includes: evaluating the protective effect based on the comparison result between the first parameter value and the third parameter value, the comparison result between the second parameter value and the fourth parameter value, and the comparison result between the first self-perceived sensory information and the second self-perceived sensory information.

[0011] According to a second aspect of the present disclosure, a computing device for evaluating the protective effect of a protectant composition to be applied to a user's keratin material is provided, the computing device comprising: an imaging device, comprising a computing circuit configured to image a first test area of ​​the user's keratin material to obtain a plurality of first images; a measuring unit, comprising a computing circuit configured to measure the first test area to obtain a second parameter value; and a processor, comprising a computing circuit configured to process the plurality of first images of the first test area to obtain a first parameter value and evaluate the protective effect based on the first parameter value and the second parameter value; wherein, before imaging the first test area, the first test area is coated with a protectant composition; then an inducer that will cause redness and / or discomfort to the user's keratin material is applied on top of the applied protectant composition; and finally, the applied protectant composition and the applied inducer are removed from the first test area.

[0012] In another embodiment of the second aspect of the present disclosure, the processor includes a computing circuit configured to perform the following: after removing the applied protectant composition and the applied inducer from the first test area, also receiving first self-perceived sensory information for the first test area from the user; and evaluating the protective effect based on the first parameter value, the second parameter value and the first self-perceived sensory information.

[0013] In yet another embodiment of the second aspect of the present disclosure, the imaging device includes a computing circuit configured to also image a second test area to obtain a plurality of second images; the measuring unit includes a computing circuit configured to measure the second test area to obtain a fourth parameter value; and the processor includes a computing circuit configured to perform the following: processing a plurality of second images for the second test area to obtain a third parameter value, and evaluating the protective effect by comparing the first parameter value with the third parameter value and comparing the second parameter value with the fourth parameter value; before imaging the second test area, the second test area is directly coated with the inducer; and then, the applied inducer is removed from the second test area.

[0014] In yet another embodiment of the second aspect of the present disclosure, the processor includes a computing circuit configured to perform the following: after removing the applied protectant composition and the applied inducer from the first test area, receiving first self-perceived sensory information for the first test area from the user, and after removing the applied inducer from the second test area, also receiving second self-perceived sensory information for the second test area from the user; and evaluating the protective effect based on the comparison result between the first parameter value and the third parameter value, the comparison result between the second parameter value and the fourth parameter value, and the comparison result between the first self-perceived sensory information and the second self-perceived sensory information.

[0015] In one example of the present disclosure, the step of imaging is performed by an imager device, and the step of measuring is performed by a device for testing transepidermal water loss of said keratinous material.

[0016] In one example of the present disclosure, the first test area and the second test area can be one of the back of the ear, the forearm, and any area of ​​the keratin material. In one example of the present disclosure, the first parameter value and the third parameter value are the redness values ​​of the keratin material; the second parameter value and the fourth parameter value are the transepidermal water loss values ​​of the keratin material, and the first self-perceived sensory information and the second self-perceived sensory information are information related to itching, burning, and tingling. In one example, the step of removing the applied protectant composition and the applied inducer from the first test area is performed within about 5 minutes to 15 minutes after the step of applying an inducer that causes redness and / or discomfort to the user's keratin material on the applied protectant composition. In one example, the step of removing the applied inducer from the second test area is performed within about 5 minutes to 15 minutes after the step of applying the inducer directly on the second test area. In a preferred example, the amount of the inducer is about 0.01g-0.1g / cm 2 To apply the protective agent composition, and at about 0.1g-1g / cm 2 to apply the inducer.

[0017] According to a third aspect of the present disclosure, a computer-readable medium is provided, on which instructions are stored. When the instructions are executed, a computing device is caused to perform the method according to the first aspect of the present disclosure.

[0018] According to a fourth aspect of the present disclosure, a method for evaluating the protective effects of a plurality of different protective agent compositions to be applied to a user's keratin material is provided, the method comprising the following steps: applying each of the plurality of different protective agent compositions respectively on each of a first plurality of test areas in the back of the user's ear and on each of a second plurality of test areas in the user's forearm; applying an inducer that may cause redness and / or discomfort to the user's keratin material respectively on each of the applied different protective agent compositions; removing the applied different protective agent compositions and the applied inducer from the first plurality of test areas and from the second plurality of test areas respectively; imaging the first plurality of test areas by an imaging device to obtain a first plurality of parameter values; measuring the second plurality of test areas by a device for testing the transepidermal water loss value of the keratin material to obtain a second plurality of parameter values; and evaluating the protective effect based on the first plurality of parameter values ​​and the second plurality of parameter values.

[0019] According to an embodiment in the fourth aspect of the present disclosure, the method further includes the following steps: after the step of removing the applied different protectant compositions and the applied inducer from the first plurality of test areas, obtaining a first plurality of self-perceived sensory information for the first plurality of test areas from the user; and evaluating the protective effect based on the first plurality of parameter values, the second plurality of parameter values ​​and the first plurality of self-perceived sensory information.

[0020] According to another embodiment of the fourth aspect of the present disclosure, the method also includes the following steps: applying the inducer directly to a third test area in the back of the user's ear and to a fourth test area in the user's forearm; removing the applied inducer from the third test area and the fourth test area; imaging the third test area by the imaging device to obtain a third parameter value; measuring the fourth test area by a device for testing the transepidermal water loss of the keratin material to obtain a fourth parameter value; and evaluating the protective effect by comparing the first plurality of parameter values ​​with the third parameter value and comparing the second plurality of parameter values ​​with the fourth parameter value.

[0021] According to yet another embodiment of the fourth aspect of the present disclosure, the method further includes the following steps: after the step of removing the applied inducer from the third test area, obtaining third self-perceived sensory information for the third test area; wherein the evaluation step further includes: evaluating the protective effect by comparing the first plurality of parameter values ​​with the third parameter value, comparing the second plurality of parameter values ​​with the fourth parameter value, and comparing the first plurality of self-perceived sensory information with the third self-perceived sensory information.

[0022] In an embodiment of the fourth aspect of the present disclosure, the first plurality of parameter values ​​and the third parameter value are redness values ​​of keratin materials in the back of the ear; the second plurality of parameter values ​​and the fourth parameter value are transepidermal water loss values ​​of keratin materials in the forearm.

[0023] In one embodiment of the fourth aspect of the present disclosure, the removing step is performed within about 5 minutes to 15 minutes after the step of applying the inducer on top of the different protectant compositions applied on the first plurality of test areas and on the second plurality of test areas and the step of applying the inducer directly on the third test area and on the fourth test area.

[0024] In one embodiment of the fourth aspect of the present disclosure, the first plurality of self-perceived sensory information and the third self-perceived sensory information are information related to itching, burning and tingling.

[0025] In one embodiment of the fourth aspect of the present disclosure, the different protective agent compositions are about 0.01 g-0.1 g / cm 2 to apply, and the inducer is about 0.1g-1g / cm 2 To apply.

[0026] According to the present disclosure, objective and subjective evaluation of a protectant composition to be applied to a user's keratinous substance can be achieved in a rapid and more efficient manner, and thus more accurate and quantitative evaluation results can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] By way of example, the above and other aspects, features and benefits of various embodiments of the present disclosure will become more fully apparent from the following detailed description with reference to the accompanying drawings, in which the same reference numerals or letters are used to designate the same or equivalent elements. The accompanying drawings are illustrated to facilitate a better understanding of the embodiments of the present disclosure and are not necessarily drawn to scale, in which:

[0028] Figure 1 A flow chart illustrating a method 100 for evaluating the protective effect of a protectant composition to be applied to a user's keratinous substance according to a first embodiment of the first aspect of the present disclosure;

[0029] Figure 2 A flow chart illustrating a method 200 for evaluating the protective effect of a protectant composition to be applied to a user's keratinous substance according to a second embodiment of the first aspect of the present disclosure;

[0030] Figure 3 A flow chart illustrating a method 300 for evaluating the protective effect of a protectant composition to be applied to a user's keratinous substance according to a third embodiment of the first aspect of the present disclosure;

[0031] Figure 4 A flow chart illustrating a method 400 of evaluating the protective effect of a protectant composition to be applied to a user's keratinous substance according to a fourth embodiment of the first aspect of the present disclosure; and

[0032] Figure 5 A block diagram illustrating a computing device 500 for evaluating the protective effect of a protectant composition to be applied to a user's keratinous substance according to the second aspect of the present disclosure. DETAILED DESCRIPTION

[0033] The embodiments herein will be described in detail below with reference to the accompanying drawings in which the embodiments are shown. However, these embodiments herein can be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. The elements of the accompanying drawings are not necessarily proportional to each other. The same numbers always refer to the same elements.

[0034] The terms used herein are only for the purpose of describing specific embodiments and are not intended to be limiting. As used herein, the singular forms "a", "an", and "the" are intended to also include the plural forms, unless the context clearly indicates otherwise. It will be further understood that when the terms "comprise", "include", "comprising", "having" are used herein, the existence of the stated features, integers, steps, operations, elements and / or components is specified, but the existence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof is not excluded.

[0035] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood. It will be further understood that the terms used herein should be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant art, and should not be interpreted as an idealized or overly formal meaning unless explicitly defined herein.

[0036] The present technology is described below with reference to the block diagrams and / or flow charts of the methods, devices (systems) and / or computer program products according to the present embodiments. It is to be understood that the blocks in the block diagrams and / or flow charts and the combination of the blocks in the block diagrams and / or flow charts can be implemented by computer program instructions. These computer program instructions can be provided to a processor, controller or control unit of a general-purpose computer, a special-purpose computer and / or other programmable data processing device to produce a machine so that instructions executed by a processor of a computer and / or other programmable data processing device create a device for implementing the functions / actions specified in the block diagram and / or one or more flow chart blocks.

[0037] Thus, the present technology may be embodied in hardware and / or software (including firmware, resident software, microcode, etc.). Furthermore, the present technology may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this document, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

[0038] Embodiments herein will be described below with reference to the accompanying drawings.

[0039] The concept of the present invention is to evaluate the protective effect of a protectant composition to be applied to the keratinous substances of a user, more particularly with regard to the redness value and the discomfort aspect to the keratinous substances.

[0040] Figure 1A flow chart illustrating a method 100 of evaluating the protective effect of a protectant composition to be applied to a user's keratinous substance according to a first embodiment of the first aspect of the present disclosure.

[0041] Prior to method 100, some preparations should be made. The user is not allowed to use any cosmetics (including conventional skin care products) on the back of the ear within 24 hours prior to testing and is not allowed to take a sauna or bath. Prior to testing, the user should be aware of the written informed consent and complete inclusion / non-inclusion criteria (primary eligibility) and medical history. At the time of testing, the user should clean the back of the ear test area with water and pat dry with a paper towel; wait for 30 minutes in a constant temperature and humidity environment.

[0042] Method 100 begins. At block 101, a protectant composition is applied to a first test area of ​​a user's keratinous material. In the context of the present disclosure, the protectant composition may be a protectant product for a user's keratinous material. In one example, the test area may be one of the back of the ear, the forearm, and any area of ​​the user's body. In one example, the protectant composition is applied at about 0.01 g-0.1 g / cm 2 At block 102, an inducer that causes redness and / or discomfort to the user's keratinous material is applied over the applied protectant composition. The inducer may be one that has a high pH component and has the risk of inducing redness and discomfort to the keratinous material. In one example, the inducer is applied at a concentration of about 0.1 g-1 g / cm 2 To apply. At box 103, the applied protectant composition and the applied inducer are removed from the first test area. Box 103 is performed in a predefined time period after box 102. In one example, the predefined time period can be from 5 minutes to 30 minutes, preferably from 5 minutes to 15 minutes. At box 104, the first test area is imaged by an imaging device to obtain a first parameter value. More specifically, in order to obtain a more accurate result, the first test area is imaged more times by the imaging device to obtain a plurality of first images, and then the plurality of first images are processed to obtain a redness value for a keratin material. In one example, such an imaging device can be a camera, a mobile phone with imaging capabilities, a laptop with imaging capabilities, etc. At box 105, the first test area is measured to obtain a second parameter value. In one example, box 105 can be performed by a device for testing the transepidermal water loss of a keratin material, and the second parameter value can be the transepidermal water loss value of the keratin material. The order of performing boxes 104 and 105 can be interchanged. At block 106, the protective effect is evaluated based on the first parameter value and the second parameter value. By means of method 100, the protective effect of the protectant composition on keratin substances, such as the protective effect in terms of redness and discomfort, can be obtained in a fast and objective manner.

[0043] Figure 2 A flow chart illustrating a method 200 of evaluating the protective effect of a protectant composition to be applied to a user's keratinous substance according to a second embodiment of the first aspect of the present disclosure.

[0044] In order to better evaluate the protective effect of a protectant composition to be applied to a user's keratinous substance, the present disclosure relates to a method for combining objective and subjective evaluation of the protective effect of a protectant composition to be applied to a user's keratinous substance.

[0045] like Figure 2 As shown in FIG. 2 , method 200 includes blocks 201, 202, 203, 204, 205, 206, and 207. Blocks 201, 202, 203, 204, 205 and Figure 1 The blocks 101, 102, 103, 104, 105 shown in FIG. 1 are identical. Therefore, blocks 201, 202, 203, 204, 205 are not described in detail. Figure 2 As shown in , a protectant composition is applied to a first test area (see box 201), and then an inducer is applied to the applied protectant composition (see box 202); through boxes 203 and 204, a first parameter value and a second parameter value are obtained, respectively. In one example, the first parameter value may be a redness value of a keratin material of the first test area, and the second parameter value may be a transepidermal water loss value of a keratin material of the second test area.

[0046] After the removal of frame 203, at frame 206, first self-perceived sensory information for the first test area is obtained from the user. Preferably, the first self-perceived sensory information for the first test area is obtained from the user within 5 minutes to 30 minutes (preferably within 5 minutes to 15 minutes) after the removal of frame 203. In one example, the first self-perceived sensory information is information related to itching, burning and tingling. The order of executing frames 204, 205, and 206 can be interchanged. At frame 207, the protective effect is evaluated based on the first parameter value, the second parameter value and the first self-perceived sensory information. Compared with the classic self-evaluation of the protective efficacy of keratin substances from chemical treatment, the present disclosure can realize a method combining objective evaluation with subjective evaluation.

[0047] In order to better understand the technical scheme of methods 100 and 200, an example will be given. In such an example, we can take the area behind the ear as the first test area and a certain type of scalp protectant as the protectant composition to be used during the test. Before the test, the first test area must be kept dry. Then, the following steps occur:

[0048] In the first step, apply 0.08g of scalp protectant on one side behind the ear, and place the scalp protectant in the center of the 2cm×2cm test area with a scraper, and the scraper is at a 45-degree angle to the first test area. Gently apply the protectant and slowly extend it to all sides, and evenly distribute the scalp protectant in the first test area.

[0049] In the second step, apply 0.5g of the inducer to the first test area of ​​2cm×2cm on the back of the ear. Place the inducer on the scalp protectant with a scraper, and the scraper is at a 45-degree angle to the first test area. Gently apply the inducer and slowly extend it to all sides, and evenly distribute the inducer in the first test area. The inducer can be any chemical composition that may cause irritation or discomfort to keratin substances.

[0050] The third step is to remove the scalp protecting agent and the inducer applied above from the first test area within 5 to 30 minutes, preferably within 5 to 15 minutes after the first and second steps, respectively.

[0051] In the fourth step, imaging the first test area to obtain a plurality of first images, and measuring the first test area to obtain the transepidermal water loss value of the keratin material.

[0052] In the fifth step, the processor processes the plurality of first images to obtain the redness value of the keratin substance.

[0053] In the final step, the protective effect was evaluated based on redness and transepidermal water loss values.

[0054] In addition, we can observe the redness value and transepidermal water loss value on the display, so users can get the protection effect in a fast and more accurate way.

[0055] In order to better evaluate the protective effect of the protective agent composition to be applied to the user's keratinous substance, in one example, we can also consider some subjective factors. For example, after the third step, we can obtain the first self-perceived sensory information related to itching, burning and stinging from the user. Finally, the protective effect is evaluated based on the redness value, the transepidermal water loss value and the first self-perceived sensory information. By doing so, a method combining objective and subjective evaluation of the protective agent composition can be achieved.

[0056] Of course, we can also use an area of ​​the forearm as the first test area and perform the above steps.

[0057] In order to obtain a better protective effect than in the absence of the protective agent composition, Figure 3A flow chart showing a method 300 for evaluating the protective effect of a protectant composition to be applied to a user's keratinous material according to a third embodiment of the first aspect of the present disclosure. Figure 3 In an embodiment of the present invention, the second test area is selected as the reference area. Figure 3 As shown in FIG. 3 , the left branch in method 300 includes blocks 301, 302, 303, 304, and 305. Figure 1 101, 102, 103, 104, 105 are the same as those shown in FIG. Therefore, blocks 301, 302, 303, 304, 305 are not described in detail. Figure 1 At block 304, a first test area is imaged to obtain a first parameter value, which may be a redness value; at block 305, the first test area is measured to obtain a second parameter value, which may be a transepidermal water loss value of keratinous materials. The order of performing blocks 304 and 305 may be interchanged.

[0058] The right branch in method 300 includes blocks 301', 303', 304', 305'. Note that in order to keep the reference numbers in other figures consistent, reference number 302' is not used. At box 301', an inducer that will cause redness and / or discomfort to the user's keratin material is directly applied to the user's second test area. After a predefined time period, the applied inducer is removed from the second test area shown in box 303'. In one example, the predefined time period can be from 5 minutes to 30 minutes, preferably from 5 minutes to 15 minutes. At box 304', the second test area is imaged by an imaging device to obtain a third parameter value. In one example, such an imaging device can be a camera, a mobile phone with imaging capabilities, a laptop computer with imaging capabilities, etc. In one example, the third parameter value can be a redness value for the keratin material of the second test area. At box 305', the second test area is measured to obtain a fourth parameter value. In one example, frame 305' can be performed by a device for testing the transepidermal water loss value of a keratin substance, and the fourth parameter value can be the transepidermal water loss value of the keratin substance. The order of executing frames 304' and 305' can be interchanged. Therefore, the first parameter value and the third parameter value correspond to the case with the protectant composition and the case without the protectant composition, respectively, and are related to the redness value of the keratin substance. The second parameter value and the fourth parameter value correspond to the case with the protectant composition and the case without the protectant composition, respectively, and are related to the transepidermal water loss value of the keratin substance. At frame 306, the protective effect is evaluated by comparing the first parameter value with the third parameter value and comparing the second parameter value with the fourth parameter value. In one example, the difference in change between the first parameter value and the third parameter value for the redness value and the difference in change between the second parameter value and the fourth parameter value for the transepidermal water loss value can be obtained, which can reflect the protective effect compared with the case without the protectant composition in an intuitive way.

[0059] In order to achieve a better protective effect than in the absence of a protectant composition, a method for combining objective and subjective assessment of the protective effect of a protectant composition to be applied to the keratinous substances of a user is proposed. Figure 4 A flow chart illustrating a method 400 for evaluating the protective effect of a protectant composition to be applied to a user's keratinous material according to a fourth embodiment of the first aspect of the present disclosure. Figure 4 In one embodiment, the second test area is selected as the reference area. Figure 4 As shown in FIG. 4 , the left branch in method 400 includes blocks 401, 402, 403, 404, and 405. Figure 2201, 202, 203, 204, 205 are the same as those shown in FIG. Therefore, blocks 401, 402, 403, 404, 405 are not described in detail. Figure 2 At block 404, a first test area is imaged to obtain a first parameter value, which may be a redness value for a keratinous material; at block 405, the first test area is measured to obtain a second parameter value, which may be a transepidermal water loss value for a keratinous material. The order of performing blocks 404 and 405 may be interchanged.

[0060] The right branch in method 400 includes boxes 401', 403', 404', and 405'. Note that in order to keep the reference numbers in other figures consistent, reference number 402' is not used. At box 401', an inducer that will cause redness and / or discomfort to the user's keratin material is directly applied to the user's second test area. After a predefined time period, the applied inducer is removed from the second test area as shown in box 403'. In one example, the predefined time period can be from 5 minutes to 30 minutes, preferably from 5 minutes to 15 minutes. At box 405', the second test area is imaged by an imaging device to obtain a third parameter value. In one example, the third parameter can be a redness value of a keratin material. In one example, such an imaging device can be a camera, a mobile phone with imaging capabilities, a laptop computer with imaging capabilities, etc. At box 405', the second test area is measured to obtain a fourth parameter value. In one example, box 405' can be performed by a device for testing transepidermal water loss of keratin materials, and the fourth parameter value can be the transepidermal water loss value of the keratin material. After box 403 is removed, at box 406, first self-perceived sensory information for the first test area is obtained from the user. After box 403' is removed, at box 406', second self-perceived sensory information for the second test area is obtained from the user. The order of executing boxes 404, 405, and 406 can be interchanged. The order of executing boxes 404', 405', and 406' can be interchanged. In one example, the first self-perceived sensory information and the second self-perceived sensory information are information related to itching, burning, and tingling. At box 407, the protective effect is evaluated based on the comparison result between the first parameter value and the third parameter value, the comparison result between the second parameter value and the fourth parameter value, and the comparison result between the first self-perceived sensory information and the second self-perceived sensory information. Herein, the first parameter value and the third parameter value correspond to the case with the protectant composition and the case without the protectant composition, respectively, and are related to the redness value of the keratin substance. The second parameter value and the fourth parameter value correspond to the case with the protectant composition and the case without the protectant composition, respectively, and are related to the transepidermal water loss value of the keratin substance. In one example, the difference in change between the first parameter value and the third parameter value for the redness value and the difference in change between the second parameter value and the fourth parameter value for the transepidermal water loss value can be obtained. Such a difference in change combined with self-perceived sensory information can intuitively reflect the protective effect compared to the case without the protectant composition in terms of objective signs such as redness and subjective signs such as itching, burning and stinging.

[0061] In order to better understand the technical solutions of methods 300 and 400, an example will be given. In such an example, we can take two areas behind the ear as the first test area and the second test area; take a certain type of scalp protectant as the protectant composition to be used during the test. Before the test, the first test area and the second test area must be kept dry. Then, the following steps occur:

[0062] In the first step, apply 0.08g of scalp protectant to the first test area behind the ear, and place the scalp protectant in the center of the 2cm×2cm test area with a scraper, and the scraper is at a 45-degree angle to the first test area. Gently apply the protectant and slowly extend it to all sides, and evenly distribute the scalp protectant in the first test area.

[0063] Second, apply 0.5g of the inducer on the first test area of ​​2cm x 2cm on the back of the ear. Place the inducer on the scalp protectant with a scraper, and the scraper is at a 45-degree angle to the first test area. Gently apply the inducer and slowly extend it to all sides, and evenly distribute the inducer in the first test area. The inducer can be any chemical composition that may cause irritation or discomfort to keratin substances.

[0064] In addition, a similar procedure as the second step occurs in the second test area. Apply 0.5 g of the inducer to the second test area of ​​2 cm x 2 cm on the back of the ear. The scraper is at a 45-degree angle to the second test area. Gently apply the inducer and slowly extend it to all sides, and evenly distribute the inducer in the second test area.

[0065] The third step is to remove the scalp protectant and inducer applied above from the first test area within 5 to 30 minutes, preferably within 5 to 15 minutes, after the first and second steps. In addition, the inducer applied above is removed from the second test area within 5 to 30 minutes, preferably within 5 to 15 minutes, after a step similar to the second step.

[0066] In the fourth step, the first test area is imaged to obtain a plurality of first images, and the first test area is measured to obtain the transepidermal water loss value of the keratin substance. In addition, the second test area is imaged to obtain a plurality of second images, and the second test area is measured to obtain the transepidermal water loss value of the keratin substance.

[0067] In the fifth step, the processor processes the plurality of first images and the plurality of second images to obtain redness values ​​of the keratin material of the first test area and the second test area, respectively.

[0068] In the final step, the protective effect is evaluated based on the comparison of the redness values ​​for the first test area and the second test area and the comparison of the transepidermal water loss values ​​for the first test area and the second test area.

[0069] In addition, we can observe the redness values ​​and transepidermal water loss values ​​for the first test area and the second test area in the form of a histogram on the display of the computing device, so that the user can obtain the protection effect compared with the case without the protectant composition in an intuitive manner.

[0070] In order to better evaluate the protective effect of the protectant composition to be applied to the user's keratinous material, we can consider some subjective factors. For example, after the third step, we can obtain first self-perceived sensory information and second self-perceived sensory information related to itching, burning and stinging from the user. Finally, the protective effect is evaluated based on the comparison results of the redness values ​​of the first test area and the second test area, the comparison results of the transepidermal water loss values ​​of the first test area and the second test area, and the comparison results of the first self-perceived sensory information and the second self-perceived sensory information. By doing so, a method combining objective and subjective evaluation of the protectant composition can be achieved.

[0071] Of course, we can also use one area of ​​the forearm as the second test area, or use two areas of the forearm as the first test area and the second test area, and perform the above steps.

[0072] In one embodiment of the third aspect of the present disclosure, we can obtain the protective effects of multiple different protective agent compositions in a faster and more accurate manner. More specifically, we can select multiple test areas to which multiple different protective agent compositions are to be applied respectively, and then apply the same inducer that will cause redness and / or discomfort to the user's keratin substances respectively on the applied different protective agent compositions. Then, similar to the steps mentioned above, the steps of removal, imaging and measurement are performed on multiple test areas. Therefore, we will obtain multiple sets of parameter values ​​for each of the multiple test areas. In one example, such parameter values ​​can be redness values ​​and transepidermal water loss values, and can be displayed on a display of a computing device in the form of a histogram. Based on such parameter values ​​displayed on the display, we can obtain the protective effects for different protective agent compositions in a faster, more intuitive and more accurate manner. In practice, redness measurement and self-evaluation are more recommended on the back of the ear, and transepidermal water loss values ​​are more recommended to be measured on the forearm. In a preferred embodiment for this case, each of a plurality of different protective agent compositions is applied to each of a first plurality of test areas in the back of the ear of the user and each of a second plurality of test areas in the forearm of the user; an inducer that causes redness and / or discomfort to the keratin material of the user is applied to each of the applied different protective agent compositions; the applied different protective agent compositions and the applied inducer are removed from the first plurality of test areas and the second plurality of test areas, respectively; the first plurality of test areas are imaged by an imaging device to obtain a first plurality of parameter values; the second plurality of test areas are measured by a device for testing the transepidermal water loss value of the keratin material to obtain a second plurality of parameter values; and the protective effect is evaluated based on the first plurality of parameter values ​​and the second plurality of parameter values. In one embodiment, the first plurality of parameter values ​​are the redness values ​​of the keratin material in the back of the ear; and the second plurality of parameter values ​​are the transepidermal water loss values ​​of the keratin material in the forearm.

[0073] In order to better evaluate the protective effects of multiple protective agent compositions to be applied to the user's keratin material, we can consider some subjective factors. In one embodiment of the third aspect, we can obtain multiple self-perceived sensory information related to itching, burning and tingling for multiple test areas from the user, which can be displayed on the display in percentage form, in histogram form or in other forms. Finally, the protective effect is evaluated based on the comparison results of the redness values ​​for multiple test areas, the comparison results of the transepidermal water loss values ​​for multiple test areas, and the comparison results of multiple sensory information. By doing so, a method combining objective evaluation and subjective evaluation of multiple protective agent compositions can be achieved. In practice, redness measurement and self-evaluation are more recommended behind the ear. Therefore, in a preferred embodiment for this situation, after the step of removing the applied different protective agent compositions and the applied inducer from the first multiple test areas, the first multiple self-perceived sensory information for the first multiple test areas is obtained from the user. The protective effect for multiple different protective agent products is evaluated based on the first multiple parameter values, the second multiple parameter values ​​and the first multiple self-perceived sensory information. In one embodiment, the first plurality of parameter values ​​are redness values ​​of keratinous materials in the back of the ear; the second plurality of parameter values ​​are transepidermal water loss values ​​of keratinous materials in the forearm. In one embodiment, the first plurality of self-perceived sensory information is information related to itching, burning and tingling.

[0074] In order to obtain the protective effect compared with no protective agent composition, in an embodiment for the third aspect, we also select a new test area as a test area without any protective agent composition. Such a new test area can be directly coated with an inducer. Then, similar to the above-mentioned steps, the steps of removal, imaging and measurement are performed on the new test area. In addition, the redness value and transepidermal water loss value for the new test area can be obtained, which can also be displayed on the display in the form of a histogram. Based on these parameter values ​​of the protective agent composition and the protective agent composition, we can easily and quickly obtain the protective effect compared with the protective agent composition. In a preferred example, the difference between the protective agent composition and the protective agent composition can be displayed on the display. By observing such a difference, the protective agent effect can be more easily identified. In practice, redness measurement and self-evaluation are more recommended on the back of the ear. Therefore, in a preferred embodiment for this situation, the inducer is directly applied to a third test area on the back of the user's ear and a fourth test area on the user's forearm; after a predefined time period such as 5 minutes to 15 minutes, the applied inducer is removed from the third test area and the fourth test area; the third test area is imaged by an imaging device to obtain a third parameter value; the fourth test area is measured by a device for testing the transepidermal water loss of keratinous materials to obtain a fourth parameter value; the protective effect is evaluated by comparing the first plurality of parameter values ​​with the third parameter value and comparing the second plurality of parameter values ​​with the fourth parameter value. In one embodiment, the first plurality of parameter values ​​and the third parameter value are redness values ​​of keratinous materials in the back of the ear; the second plurality of parameter values ​​and the fourth parameter value are transepidermal water loss values ​​of keratinous materials in the forearm.

[0075] In order to obtain the protective agent effect compared with no protective agent composition, in the embodiment of the third aspect, we also select a new test area as a test area without any protective agent composition. We can obtain self-perceived sensory information related to itching, burning and tingling for the new test area from the user, which can be displayed on the display in percentage form, in histogram form or in other forms. Then, similar to the steps mentioned above, the steps of removal, imaging and measurement are performed on the new test area. In addition, the redness value and transepidermal water loss value for the new test area can be obtained, which can also be displayed on the display in the form of a histogram. Based on these parameter values ​​obtained by applying the protective agent composition and not applying the protective agent composition, we can easily and quickly obtain the protective effect compared with no protective agent composition. In a preferred embodiment, the difference between these parameter values ​​obtained by applying the protective agent composition and not applying the protective agent composition, as well as the comparison results between some self-perceived sensory information, can be displayed on the display. By observing such a difference, the protective agent effect can be more easily identified. In practice, redness measurement and self-evaluation are more recommended on the back of the ear. Therefore, in a preferred embodiment for this situation, after the step of removing the applied inducer from the third test area, third self-perceived sensory information for the third test area is also obtained; wherein the evaluation step also includes evaluating the protective effect by comparing the first plurality of parameter values ​​with the third parameter values, comparing the second plurality of parameter values ​​with the fourth parameter values, and comparing the first plurality of self-perceived sensory information with the third self-perceived sensory information. In one embodiment, the first plurality of parameter values ​​and the third parameter value are redness values ​​of keratin materials in the back of the ear; the second plurality of parameter values ​​and the fourth parameter value are transepidermal water loss values ​​of keratin materials in the forearm. In one embodiment, the first plurality of self-perceived sensory information and the third self-perceived sensory information are information related to itching, burning and tingling.

[0076] In the context of the present disclosure, the amount of the protectant composition and the inducer to be applied and the size of the test area are only examples and are not limited to the above-mentioned values. Preferably, the protectant composition is applied at about 0.01 g-0.1 g / cm 2 To apply, and the inducer is about 0.01g-1g / cm 2 To apply.

[0077] Figure 5 A block diagram illustrating a computing device 500 for evaluating the protective effect of a protectant composition to be applied to a user's keratinous substance according to the second aspect of the present disclosure.

[0078] The computing device 500 includes an imaging device 501, a measuring unit 502, and a processor 503. The imaging device 501 includes a computing circuit configured to image a first test area of ​​a user's keratin material to obtain a plurality of first images. The measuring unit 502 includes a computing circuit configured to measure the first test area to obtain a second parameter value. The processor 503 includes a computing circuit configured to obtain a first parameter value for the first test area and evaluate a protective effect based on the first parameter value and the second parameter value.

[0079] Before imaging the first test area, several steps are performed. First, a protectant composition is applied to the first test area of ​​the user's keratin material. In the context of the present disclosure, the protectant composition can be a protective product for the user's keratin material. In one example, the test area can be one of the back of the ear, the forearm, and any area of ​​the user's body. Next, an inducer that will cause the user's keratin material to become red and / or uncomfortable is applied to the applied protectant composition. The inducer can be those inducers that have a high pH component and have the risk of inducing redness and discomfort of the keratin material. Next, within a predefined time period after applying the inducer, the applied protectant composition and the applied inducer are removed from the first test area. In one example, the predefined time period can be from 5 minutes to 30 minutes, preferably from 5 minutes to 15 minutes. In one example, such an imaging device can be a mobile phone with imaging capabilities, a laptop with imaging capabilities, etc. In one example, the measuring unit can be a device for testing the transepidermal water loss value of a keratin material, and the second parameter value can be the transepidermal water loss value of the keratin material. More particularly, the image is processed to obtain the redness value of the keratinous material.By means of such a calculation, the protective effects such as redness and discomfort of a protectant composition for keratinous materials can be obtained in a fast and objective manner.

[0080] In order to better evaluate the protective effect of a protectant composition to be applied to a user's keratin substance, the present disclosure relates to a method of combining an objective evaluation with a subjective evaluation of the protective effect of a protectant composition to be applied to a user's keratin substance. In one example, the processor 503 includes a computing circuit configured to perform the following: after removing the applied composition and the applied inducer from the first test area, also receiving first self-perceived sensory information for the first test area from the user; and evaluating the protective effect based on the first parameter value, the second parameter value and the first self-perceived sensory information. In one example, the first parameter value is related to the redness value, and the second parameter value is related to the transepidermal water loss value. In one example, the first self-perceived sensory information is information related to itching, burning and tingling.

[0081] In order to obtain a better protective effect than the case without the protective agent composition, in one embodiment, the second test area is selected as the reference area, and the agent that causes redness and / or discomfort to the user's keratin material is directly applied to the second test area of ​​the user. After a predefined period of time, the applied inducing agent is removed from the second test area. In one example, the predefined period of time can be from 5 minutes to 30 minutes, preferably from 5 minutes to 15 minutes. Then, the second test area is imaged by an imaging device 501 to obtain a plurality of first images. The processor 502 processes the image for the second test area to obtain a third parameter value. In one example, such an imaging device 501 can be a camera, a mobile phone with imaging capabilities, a laptop with imaging capabilities, etc. Then, the second test area is measured by a measuring unit 502 such as a device for testing the transepidermal water loss value of keratin materials to obtain a fourth parameter value, and the fourth parameter value can be the transepidermal water loss value of the keratin material. In this article, the first parameter value and the third parameter value correspond to the case with the protective agent composition and the case without the protective agent composition, respectively, and are related to the redness value. The second parameter value and the fourth parameter value correspond to the case with the protectant composition and the case without the protectant composition, respectively, and are related to the trans-epidermal water loss value of the keratin substance. The processor 503 is configured to evaluate the protection effect by comparing the first parameter value with the third parameter value and comparing the second parameter value with the fourth parameter value. In an example, the difference in change between the first parameter value and the third parameter value for the redness value and the difference in change between the second parameter value and the fourth parameter value for the trans-epidermal water loss value can be obtained and can be displayed in the form of a histogram on the display of the computing device, which can reflect the protection effect compared with the case without the protectant composition in an intuitive manner.

[0082] In order to obtain a better protective effect than without the protective agent composition, a method combining objective and subjective evaluation of the protective effect of the protective agent composition to be applied to the keratinous material of the user is proposed. In one example, the second test area is selected as a reference area.

[0083] An inducer that causes redness and / or discomfort to the user's keratin material is directly applied to the user's second test area. After a predefined time period, the applied inducer is removed from the second test area. In one example, the predefined time period can be from 5 minutes to 30 minutes, preferably from 5 minutes to 15 minutes. Then, the second test area is imaged by an imaging device 501 to obtain a plurality of second images for the second test area. A processor 503 processes the plurality of second images to obtain a third parameter value. The second test area is measured by a measuring unit 502 such as a device for testing the transepidermal water loss value of a keratin material to obtain a fourth parameter value, and the fourth parameter value can be the transepidermal water loss value of the keratin material. After removing the applied protectant composition and the applied inducer from the first test area, a first self-perceived sensory information for the first test area is obtained from the user, and after removing the applied inducer from the second test area, a second self-perceived sensory information for the second test area is obtained from the user. In one example, the first self-perceived sensory information and the second self-perceived sensory information are information related to itching, burning, and tingling. Herein, the first parameter value and the third parameter value correspond to the case with the protectant composition and the case without the protectant composition, respectively, and are related to the redness value for the keratin substance. The second parameter value and the fourth parameter value correspond to the case with the protectant composition and the case without the protectant composition, respectively, and are related to the transepidermal water loss value of the keratin substance. In one embodiment, the processor 503 is further configured to evaluate the protective effect based on the comparison result between the first parameter value and the third parameter value; the comparison result between the second parameter value and the fourth parameter value, and the comparison result between the first self-perceived sensory information and the second self-perceived sensory information. In one example, the difference in change between the first parameter value and the third parameter value for the redness value and the difference in change between the second parameter value and the fourth parameter value for the transepidermal water loss value can be obtained. Such a difference in change combined with the self-perceived sensory information can reflect the protective effect compared with the case without the protectant composition in an intuitive manner in terms of objective signs such as redness and subjective signs such as itching, burning and tingling.

[0084] The computing device 500 can be, for example, a server of a service provider, a device associated with a client (e.g., a client device), a system on a chip, and / or any other suitable computing device or computing system. In various embodiments, the computing device 500 can be in various configurations. For example, the computing device 500 can be implemented as a computer-like device, including a personal computer, a desktop computer, a multi-screen computer, a laptop computer, a netbook, etc. The computing device 500 can also be implemented as a device similar to a mobile device, including mobile devices such as mobile phones, portable music players, portable game devices, tablet computers, multi-screen computers, etc. The computing device 500 can also be implemented as a TV-like device, which includes having a generally larger screen or being connected to a generally larger screen in a casual viewing environment. These devices include TVs, set-top boxes, game consoles, etc.

[0085] In one embodiment, the computing circuit includes, among other things, one or more computing devices such as a processor (e.g., a microprocessor, a quantum processor, a qubit processor, etc.), a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), etc., or any combination thereof, and may include discrete digital or analog circuit elements or electronic devices, or a combination thereof. In one embodiment, the computing circuit includes one or more ASICs having a plurality of predefined logic components. In one embodiment, the computing circuit includes one or more FPGAs, each of which has a plurality of programmable logic components.

[0086] In one embodiment, the computing circuit includes one or more electronic circuits, printed circuits, flexible circuits, electrical conductors, electrodes, cavity resonators, conductive traces, ceramic patterned electrodes, electromechanical components, transducers, and the like.

[0087] In one embodiment, the computing circuit includes one or more components that are operably coupled to each other (e.g., communicatively, electromagnetically, magnetically, ultrasonically, optically, inductively, electrically, capacitively, wirelessly, etc.). In one embodiment, the circuit includes one or more remotely located components. In one embodiment, the remotely located components are operably coupled, e.g., via wireless communication. In one embodiment, the remotely located components are operably coupled, e.g., via one or more communication modules, receivers, transmitters, transceivers, etc.

[0088] In one embodiment, the computing circuit includes a memory, such as one that stores instructions or information. Non-limiting examples of memory include volatile memory (e.g., random access memory (RAM), dynamic random access memory (DRAM), etc.), non-volatile memory (e.g., read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), compact disk read-only memory (CD-ROM), etc.), permanent memory, etc. Other non-limiting examples of memory include erasable programmable read-only memory (EPROM), flash memory, etc. In one embodiment, the memory is coupled to, for example, one or more computing devices via one or more instruction, information, or power buses. In one embodiment, the computing circuit includes one or more databases stored in the memory. In one embodiment, the computing circuit includes one or more lookup tables stored in the memory.

[0089] In one embodiment, the computing circuitry includes one or more computer readable media drives, interface sockets, universal serial bus (USB) ports, memory card slots, etc., and one or more input / output components, such as, for example, a graphical user interface, a display, a keyboard, keys, a trackball, a joystick, a touch screen, a mouse, switches, dials, etc., and any other peripheral devices. In one embodiment, the computing circuitry includes one or more user input / output components operably coupled to at least one computing device configured to control (electrically, electromechanically, software-implemented, firmware-implemented, or other control, or a combination thereof) at least one parameter associated with determining one or more tissue thermal characteristics, for example, in response to a detected shift in the on-voltage.

[0090] In one embodiment, the computing circuitry includes electrical circuits forming a general-purpose computing device configured by a computer program (e.g., a general-purpose computer configured by a computer program that at least partially performs the processes and / or devices described herein, or a microprocessor configured by a computer program that at least partially performs the processes and / or devices described herein), electrical circuits forming a memory device (e.g., a form of memory (e.g., random access, flash, read-only, etc.)), electrical circuits forming a communication device (e.g., a modem, a communication switch, an optoelectronic device, etc.), and / or any non-electrical analog thereto, such as an optical or other analog.

[0091] An embodiment of the present disclosure may be an article of manufacture in which instructions (e.g., computer code) are stored on a non-transitory machine-readable medium (such as a microelectronic memory) that programs one or more data processing components (collectively referred to herein as "processors") to perform the above operations. In other embodiments, some of these operations may be performed by specific hardware components that include hard-wired logic (e.g., dedicated digital filter blocks and state machines). Alternatively, these operations may be performed by any combination of programmed data processing components and fixed hard-wired circuit components.

[0092] Although embodiments have been illustrated and described herein, it will be appreciated by those skilled in the art that various changes and modifications may be made, and equivalents may be substituted for elements thereof, without departing from the true scope of the present technology. In addition, many modifications may be made to accommodate the teachings herein and specific circumstances without departing from the central scope thereof. Therefore, it is intended that the present embodiments are not limited to the specific embodiments disclosed as the best mode intended for carrying out the present technology, but that the present embodiments include all embodiments falling within the scope of the appended claims.

Claims

1. A method for evaluating the protective effect of a protectant composition to be applied to a user's keratinous material, the method comprising the following steps: - applying the protectant composition on a first test area of ​​keratinous material of the user; - applying an inducing agent that causes redness and / or discomfort to the user's keratinous substances on top of the applied protectant composition; - removing the applied protectant composition and the applied inducer from said first test area; - imaging the first test area by an imaging device to obtain a first parameter value; - measuring said first test area by means of a device for measuring the transepidermal water loss value of said keratinous material, so as to obtain a second parameter value; as well as - evaluating the protection effect based on the first parameter value and the second parameter value.

2. The method according to claim 1, further comprising the steps of: - obtaining first self-perceived sensory information from the user about the first test area after the step of removing the applied protectant composition and the applied inducer from the first test area; and - evaluating a protective effect based on the first parameter value, the second parameter value and the first self-perceived sensory information.

3. The method according to claim 1, further comprising the steps of: - applying the inducer directly to a second test area of ​​the user; - removing the applied inducer from the second test area; - imaging the second test area by the imaging device to obtain a third parameter value; - measuring said second test area by means of a device for measuring transepidermal water loss of said keratinous materials, so as to obtain a fourth parameter value; as well as - evaluating the protective effect by comparing the first parameter value with the third parameter value and comparing the second parameter value with the fourth parameter value.

4. The method according to claim 3, further comprising the steps of: - obtaining first self-perceived sensory information for the first test area after the step of removing the applied protectant composition and the applied inducer from the first test area; - obtaining second self-perceived sensory information about the second test area from the user after the step of removing the applied inducer from the second test area; Wherein, the evaluation step also includes: evaluating the protective effect based on the comparison result between the first parameter value and the third parameter value, the comparison result between the second parameter value and the fourth parameter value, and the comparison result between the first self-perceived sensory information and the second self-perceived sensory information.

5. The method according to any one of claims 1 to 4, wherein: The imaging step comprises: - imaging the first test area and the second test area by the imaging device to obtain a plurality of first images and a plurality of second images; and - processing said plurality of first images and said plurality of second images to obtain redness values ​​of keratinous materials for said first test area and said second test area.

6. The method according to any one of claims 1 to 4, wherein: The measuring steps include: - measuring said first test area and said second test area by means of a device for testing transepidermal water loss of said keratinous materials; - obtaining a transepidermal water loss value for keratinous material for said first test area and said second test area; and - displaying said transepidermal water loss value on a display of said device.

7. The method according to any one of claims 1 to 4, wherein: The first test area and the second test area can be one of the back of the ear, the forearm, and any area of ​​the keratinous material.

8. The method according to any one of claims 1 to 4, wherein: The first parameter value and the third parameter value are redness values ​​of the keratin material; the second parameter value and the fourth parameter value are transepidermal water loss values ​​of the keratin material.

9. The method according to any one of claims 1 to 4, wherein: The step of removing is performed within about 5 minutes to 15 minutes after the step of applying the inducer on top of the applied protectant composition on the first test area and the step of applying the inducer directly on the second test area.

10. The method according to any one of claims 2 to 4, wherein: The first self-perceived sensory information and the second self-perceived sensory information are information related to itching, burning and tingling.

11. The method according to any one of claims 1 to 10, wherein: The protective agent composition is about 0.01g-0.1g / cm 2 to apply, and the inducer is about 0.1g-1g / cm 2 To apply.

12. A computing device for evaluating the protective effect of a protectant composition to be applied to a keratinous substance of a user, comprising: - an imaging device comprising computing circuitry configured to image a first test area of ​​keratinous material of said user to obtain a plurality of first images; - a measuring unit comprising a computing circuit configured to measure said first test area to obtain a second parameter value; as well as a processor comprising a computing circuit configured to process a plurality of first images of the first test area to obtain a first parameter value and to evaluate a protective effect based on the first parameter value and the second parameter value; Wherein, before imaging the first test area, the first test area is coated with a protectant composition; then an inducer that may cause redness and / or discomfort to the user's keratin material is applied on the applied protectant composition, and finally the applied protectant composition and the applied inducer are removed from the first test area.

13. The computing device of claim 12, wherein: The processor includes a computing circuit configured to perform the following: after removing the applied protectant composition and the applied inducer from the first test area, also receive first self-perceived sensory information for the first test area from the user; and evaluate the protective effect based on the first parameter value, the second parameter value and the first self-perceived sensory information.

14. The computing device of claim 12, wherein: The imaging device includes computing circuitry configured to also image a second test area to obtain a plurality of second images; The measuring unit includes a computing circuit configured to measure the second test area to obtain a fourth parameter value; as well as The processor includes a computing circuit configured to: process a plurality of second images for the second test area to obtain a third parameter value, and evaluate a protective effect by comparing the first parameter value with the third parameter value and comparing the second parameter value with the fourth parameter value; Wherein, before imaging the second test area, the second test area is directly coated with the inducer; and then, the coated inducer is removed from the second test area.

15. The computing device of claim 14, wherein: The processor includes a computing circuit configured to perform the following: after removing the applied protectant composition and the applied inducer from the first test area, receiving first self-perceived sensory information for the first test area from the user, and after removing the applied inducer from the second test area, also receiving second self-perceived sensory information for the second test area from the user; and evaluating the protective effect based on the comparison result between the first parameter value and the third parameter value, the comparison result between the second parameter value and the fourth parameter value, and the comparison result between the first self-perceived sensory information and the second self-perceived sensory information.

16. A computing device according to any one of claims 12 to 15, wherein: The measuring unit is a device for testing the transepidermal water loss value of the keratin material.

17. A computing device according to any one of claims 12 to 15, wherein: The first test area and the second test area can be one of the back of the ear, the forearm, and any area of ​​keratinous material.

18. The computing device of any one of claims 12 to 15, wherein: The first parameter value and the third parameter value are redness values ​​of the keratin material; the second parameter value and the fourth parameter value are transepidermal water loss values ​​of the keratin material.

19. The computing device of any one of claims 12 to 18, wherein: The first self-perceived sensory information and the second self-perceived sensory information are information related to itching, burning and tingling.

20. A computer readable medium having stored thereon instructions which, when executed, cause a computing device to perform the method of one of claims 1-11.

21. A method for evaluating the protective effect of a plurality of different protective agent compositions to be applied to a user's keratinous material, the method comprising the steps of: - applying each of the plurality of different protectant compositions respectively to each of the first plurality of test areas in the back of the user's ear and to each of the second plurality of test areas in the user's forearm; - applying an inducing agent that causes redness and / or discomfort to the keratinous substances of the user, respectively, on each of the different applied protectant compositions; - removing the applied different protectant compositions and the applied inducer from the first plurality of test areas and from the second plurality of test areas, respectively; - imaging the first plurality of test areas by an imaging device to obtain a first plurality of parameter values; - measuring said second plurality of test areas by means of a device for measuring the transepidermal water loss value of said keratinous material, so as to obtain a second plurality of parameter values; as well as - evaluating a protective effect based on the first plurality of parameter values ​​and the second plurality of parameter values.

22. The method according to claim 21, further comprising the steps of: - obtaining from the user a first plurality of self-perceived sensory information for the first plurality of test areas after the step of removing the applied different protectant compositions and the applied inducer from the first plurality of test areas; as well as - evaluating a protective effect based on the first plurality of parameter values, the second plurality of parameter values ​​and the first plurality of self-perceived sensory information.

23. The method according to claim 21, further comprising the steps of: - applying the inducer directly to a third test area in the back of the user's ear and to a fourth test area in the user's forearm; - removing the applied inducer from the third test area and the fourth test area; - imaging the third test area by the imaging device to obtain a third parameter value; - measuring said fourth test area by means of a device for measuring transepidermal water loss of said keratinous material to obtain a fourth parameter value; as well as - evaluating the protective effect by comparing the first plurality of parameter values ​​with the third parameter values ​​and by comparing the second plurality of parameter values ​​with the fourth parameter values.

24. The method according to claim 23, further comprising the steps of: - obtaining third self-perceived sensory information for the third test area after the step of removing the applied inducer from the third test area; Wherein, the evaluation step also includes: evaluating the protective effect by comparing the first plurality of parameter values ​​with the third parameter value, comparing the second plurality of parameter values ​​with the fourth parameter value, and comparing the first plurality of self-perceived sensory information with the third self-perceived sensory information.

25. The method according to any one of claims 21 to 24, wherein: The first plurality of parameter values ​​and the third parameter value are redness values ​​of keratin materials in the back of the ear; the second plurality of parameter values ​​and the fourth parameter value are transepidermal water loss values ​​of keratin materials in the forearm.

26. The method according to any one of claims 21 to 24, wherein: The removing step is performed within about 5 minutes to 15 minutes after the step of applying the inducer onto the different protectant compositions applied on the first plurality of test areas and on the second plurality of test areas and the step of applying the inducer directly on the third test area and on the fourth test area.

27. The method according to any one of claims 22 to 24, wherein: The first plurality of self-perceived sensory information and the third self-perceived sensory information are information related to itching, burning, and tingling.

28. The method according to any one of claims 21 to 27, wherein: The different protective agent compositions are about 0.01 g-0.1 g / cm 2 to apply, and the inducer is about 0.1g-1g / cm 2 To apply.

Images