JP2003024282A - Method for evaluating skin state - Google Patents
Method for evaluating skin stateInfo
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- JP2003024282A JP2003024282A JP2001210907A JP2001210907A JP2003024282A JP 2003024282 A JP2003024282 A JP 2003024282A JP 2001210907 A JP2001210907 A JP 2001210907A JP 2001210907 A JP2001210907 A JP 2001210907A JP 2003024282 A JP2003024282 A JP 2003024282A
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- feeling
- skin
- coefficient
- sensory
- friction
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、皮膚の状態の美容
上の評価方法に関する発明である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cosmetically evaluating the condition of skin.
【０００２】[0002]
【従来の技術】香粧品分野において、皮膚の感触を官能
評価のみに頼らず、物理機器を用いた客観的指標により
測定することは、非常に有用である。2. Description of the Related Art In the field of perfumery and cosmetics, it is very useful to measure the feel of the skin by an objective index using a physical device without relying solely on sensory evaluation.
【０００３】この客観的指標の中でも、皮膚表面摩擦は
有力視されている指標の一つであり、現在までに、皮膚
表面摩擦を測定する試みがなされている。例えば、この
ような試みとして、「摩擦感テスターを用いた油性剤の
性能評価」がなされている〔J.Soc.Cosmet.Chem.Japan.
Vol.32,No.1(1998) 〕。この試みは、人工皮革上に油性
サンプルを塗布して、その部分の平均摩擦係数を求め
て、かかる平均摩擦係数と官能評価との相関性について
の検討の試みである。Among these objective indexes, the skin surface friction is one of the most regarded indexes, and up to now, attempts have been made to measure the skin surface friction. For example, as such an attempt, `` Performance evaluation of oiliness agent using friction tester '' has been made [J.Soc.Cosmet.Chem.Japan.
Vol.32, No.1 (1998)]. This is an attempt to study the correlation between the average friction coefficient and the sensory evaluation by applying an oily sample on artificial leather, determining the average friction coefficient of the portion.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
試みは、人工皮革を用いたin vitroの試験であり、得ら
れた平均摩擦係数は、あくまでも間接的なデータとして
扱わざるを得ない。また、外用組成物についての評価
は、塗布直後よりも、外用組成物が肌に馴染んだ状態で
の評価が必要であるが、このin vitroの試験の人工皮革
においては、その状態を再現することが困難である。However, the above-mentioned attempt is an in vitro test using artificial leather, and the obtained average friction coefficient must be treated as indirect data. Further, the evaluation of the composition for external use, it is necessary to evaluate the external composition in a state in which the external composition is familiar to the skin than immediately after application, but in the artificial leather of this in vitro test, the state should be reproduced. Is difficult.
【０００５】そこで、本発明が解決すべき課題は、皮膚
摩擦に係わる指標を用いた、官能評価との高い相関性を
有する、in vivo の皮膚の状態の評価を行う手段を提供
することにある。Therefore, the problem to be solved by the present invention is to provide means for evaluating in vivo skin condition having a high correlation with sensory evaluation using an index relating to skin friction. .
【０００６】[0006]
【課題を解決するための手段】本発明者は、この課題を
解決するために、皮膚摩擦に係わる指標と官能評価との
関連性についての検討を行った。その結果、皮膚摩擦に
係わる指標として、ヒトの皮膚の表面における、平均摩
擦係数及び／又は平均摩擦係数の変動係数を用いると、
皮膚についての官能評価と高い相関性が認められること
を見出し、本発明を完成した。In order to solve this problem, the present inventor examined the relationship between the index relating to skin friction and sensory evaluation. As a result, if the average coefficient of friction and / or the coefficient of variation of the average coefficient of friction on the surface of human skin is used as an index related to skin friction,
It was found that a high correlation with the sensory evaluation of the skin was found, and the present invention was completed.
【０００７】すなわち、本発明は、ヒトの皮膚の表面に
おける、平均摩擦係数及び／又は平均摩擦係数の変動係
数と、皮膚の状態とを関連付けて皮膚の状態を評価す
る、皮膚の状態の評価方法（以下、本評価方法ともい
う）を提供する発明である。That is, the present invention relates to a method for evaluating a skin condition, in which the skin condition is evaluated by associating the average friction coefficient and / or the coefficient of variation of the average friction coefficient with the skin condition on the surface of human skin. It is an invention that provides (hereinafter, also referred to as the present evaluation method).
【０００８】本評価方法は、皮膚の状態が、化粧処理後
の状態の経時的な評価を行う場合に、特に有利な方法で
ある。なお、本発明は、美容分野（化粧品の開発や化粧
品の使用者のテスト等）において用いられることが好適
な発明である。This evaluation method is a particularly advantageous method when the state of the skin is evaluated with time after the makeup treatment. The present invention is preferably used in the field of beauty (development of cosmetics, test of cosmetics users, etc.).
【０００９】[0009]
【発明の実施の形態】本評価方法における指標の一つで
ある、「ヒトの皮膚表面における平均摩擦係数」（以
下、平均摩擦係数又はＭＩＵともいう）は、摩擦係数、
すなわち、２つの物体の接触面（本発明においては、摩
擦測定用プローブとヒトの皮膚の接触面を意味する）に
はたらく摩擦力の大きさＦと２面を垂直に押しつけてい
る力（垂直荷重）の大きさＰとの比、μ＝Ｆ／Ｐの、プ
ローブを皮膚上で動かす過程における平均値である。す
なわち、BEST MODE FOR CARRYING OUT THE INVENTION "Average friction coefficient on human skin surface" (hereinafter, also referred to as average friction coefficient or MIU), which is one of the indexes in this evaluation method, is
That is, the magnitude F of the frictional force acting on the contact surface of the two objects (in the present invention, the contact surface between the friction measuring probe and the human skin) and the force that vertically presses the two surfaces (vertical load) ) Is the mean value of the ratio of P = μ / F / P in the process of moving the probe on the skin. That is,
【００１０】[0010]
【数１】
（式中、Ｌはプローブの移動距離、μは摩擦係数であ
る）等の数式で表される。[Equation 1] (Where L is the moving distance of the probe and μ is the coefficient of friction).
【００１１】また、平均摩擦係数の変動係数（以下、変
動係数又はＭＭＤともいう）とは、上記の平均摩擦係数
の変動係数、すなわち、プローブを皮膚上で動かす過程
における摩擦係数μのばらつきの程度を示す係数、例え
ば、The coefficient of variation of the average coefficient of friction (hereinafter also referred to as the coefficient of variation or MMD) is the coefficient of variation of the above-mentioned average coefficient of friction, that is, the degree of variation of the coefficient of friction μ in the process of moving the probe on the skin. A coefficient indicating, for example,
【００１２】[0012]
【数２】
（式中、Ｌはプローブの移動距離、μは摩擦係数であ
る）等の数式で表される値である。[Equation 2] (Where L is the moving distance of the probe, and μ is the coefficient of friction).
【００１３】平均摩擦係数と変動係数は、専用の摩擦感
テスターを用いることによって把握することができる。
この専用の摩擦感テスターは、皮膚上においてプローブ
をスライドさせて、そのスライドの過程でプローブにお
いて発生する摩擦力を計測可能なタイプのテスターであ
ることが好適である。かかる摩擦力を演算処理すること
によって、所望する平均摩擦係数と変動係数を算出する
ことが可能である。このようなタイプの摩擦感テスター
として、例えば、ＫＥＳ−ＳＥ（ＫＡＴＯ ＴＥＣＫ社
製）を挙げることができる。The average coefficient of friction and the coefficient of variation can be grasped by using a dedicated friction feeling tester.
It is preferable that this dedicated friction sensation tester is a type of tester capable of measuring the frictional force generated in the probe by sliding the probe on the skin. By calculating the friction force, it is possible to calculate the desired average friction coefficient and variation coefficient. Examples of such a type of friction feeling tester include KES-SE (manufactured by KATO TECK).
【００１４】本評価方法によって、評価される皮膚の状
態は、外用組成物における官能試験（実使用試験）の官
能指標によって表現され得る。この官能指標としては、
例えば、べたつき感、油性感、うるおい感、しっとり
感、つるつる感、はり感、水々しさ、やわらか感、なめ
らか感、つるつる感、ふっくら感、さっぱり感、かさつ
き感等が挙げられるが、これらの中でも、なめらか感、
べたつき感、油性感、しっとり感、つるつる感、はり
感、うるおい感、さっぱり感、かさつき感が、本評価方
法において、特に的確に評価され得る官能指標である。
さらに、油性感としっとり感は、本評価方法において、
極めて的確に評価され得る官能指標である。The skin condition evaluated by the present evaluation method can be expressed by the sensory index of the sensory test (actual use test) of the composition for external use. As this sensory index,
For example, a sticky feeling, an oily feeling, a moisturizing feeling, a moist feeling, a smooth feeling, a supple feeling, a freshness, a soft feeling, a smooth feeling, a smooth feeling, a plump feeling, a refreshing feeling, a feeling of dryness, etc. Among them, the smooth feeling,
Sticky feeling, oily feeling, moisturizing feeling, smooth feeling, firm feeling, moisturizing feeling, refreshing feeling, and bulky feeling are sensory indexes that can be evaluated particularly accurately in the present evaluation method.
Furthermore, the oily feeling and moisturizing feeling are
It is a sensory index that can be evaluated extremely accurately.
【００１５】本評価方法の大きな特徴は、直接ヒトの皮
膚を評価し得る、in vivo における評価方法であるの
で、従来の人工皮革を用いる方法に比べて、より現実に
即した評価を行うことが可能である。例えば、人工皮革
における表面摩擦を検討しても、通常の皮膚にある程度
近似した状態における評価が可能であるのは、外用組成
物を人工皮革に塗布した際ないし直後であり、皮膚にお
いて化粧処理された外用組成物が徐々に皮膚に馴染んで
ゆく過程を、経時的に追って評価することは困難である
が、本評価方法においては、化粧処理後の皮膚の状態を
経時的に、的確に評価することが可能である。Since a major feature of this evaluation method is an in vivo evaluation method capable of directly evaluating human skin, it is possible to perform a more realistic evaluation as compared with the conventional method using artificial leather. It is possible. For example, even when studying the surface friction in artificial leather, it is possible to evaluate in a state that is somewhat similar to normal skin, when or immediately after the composition for external use is applied to artificial leather, and the cosmetic treatment is performed on the skin. It is difficult to evaluate the process by which the externally applied composition gradually adapts to the skin over time, but in this evaluation method, the condition of the skin after makeup treatment is evaluated over time with accuracy. It is possible.
【００１６】[0016]
【実施例】以下、本発明を実施例により具体的に説明す
る。本評価方法の有用性を示すために、皮膚摩擦係数等
と官能指標との関係を検討した。EXAMPLES The present invention will be specifically described below with reference to examples. In order to show the usefulness of this evaluation method, the relationship between the skin friction coefficient and the sensory index was examined.
【００１７】試験方法
i)専門パネル試験
１種類の試料（下記処方の乳液）について３名のパネル
の前腕内側部（石鹸洗浄後）に、試料（下記処方の乳
液）を塗布（２μL/cm2 ）し、４時間後、７時間後の平
均摩擦係数と変動係数の測定を行った。さらに、６名の
女性専門パネルの顔面に同じ試料を塗布（通常使用量の
塗布）し、塗布４時間後、７時間後の官能評価を行っ
た。 Test method i) Special panel test About one kind of sample (milky lotion of the following formulation) The sample (milky lotion of the following formulation) was applied (2 μL / cm 2 ) to the inner part of the forearm (after soap washing) of three people's panel. ) Then, the average friction coefficient and the variation coefficient after 4 hours and 7 hours were measured. Furthermore, the same sample was applied to the faces of 6 female specialist panels (usually applied amount), and sensory evaluation was carried out 4 hours and 7 hours after application.
【００１８】ii) 一般パネル試験
上記と同様に１種類の試料（下記処方の乳液）について
３名のパネルの前腕内側部（石鹸洗浄後）に、試料（下
記処方の乳液）を塗布（２μL/cm2 ）し、７時間後の平
均摩擦係数と変動係数の測定を行った。さらに、１５４
名の一般パネルの顔面に同じ試料を、夜間に塗布（通常
使用量の塗布）し、塗布翌朝における官能評価を行っ
た。Ii) General Panel Test Similar to the above, for one type of sample (milk of the following formulation), the sample (milk of the following formulation) was applied to the inside of the forearm (after soap washing) of three panels (2 μL / cm 2 ), and after 7 hours, the average coefficient of friction and the coefficient of variation were measured. Furthermore, 154
The same sample was applied to the face of a general panel of the name at night (application of a usual amount), and sensory evaluation was performed the morning after the application.
【００１９】試料の調製
本実施例における試料は、第１表に示す処方の９種類の
乳液を用いた。なお、各試料は、常法により調製した。 Preparation of Samples As samples in this example, 9 kinds of emulsions having the formulations shown in Table 1 were used. Each sample was prepared by a conventional method.
【００２０】[0020]
【表１】 [Table 1]
【００２１】平均摩擦係数等の測定
皮膚摩擦についての指標である、平均摩擦係数と変動係
数の測定は、摩擦感テスターＫＥＳ−ＳＥ（ＫＡＴＯ
ＴＥＣＫ社製：皮膚摩擦を測定可能な位置にアームホル
ダーを付設する改良を施した）に、プローブ（１０×１
０mmの正方形面上に、直径０．５mmのピアノ線を２０本
並列させることにより、ヒトの指紋を模倣したプロー
ブ）と腕を接触させて、プローブのピアノ線の長手方向
と直角の向きにプローブを移動させて（荷重：０．２４
４Ｎ、移動速度：１．１mm/sec）、被験者の前腕部にお
ける平均摩擦係数等を計測した。 Measurement of Average Friction Coefficient, etc. The average friction coefficient and coefficient of variation, which are indicators for skin friction, are measured by the friction feeling tester KES-SE (KATO).
Made by TECK: A probe (10 × 1) was attached to the arm holder at a position where skin friction can be measured.
By arranging 20 piano wires with a diameter of 0.5 mm in parallel on a 0 mm square surface, the arm is brought into contact with a probe imitating a human fingerprint), and the probe is oriented in a direction perpendicular to the longitudinal direction of the piano wire of the probe. Move (load: 0.24
4 N, moving speed: 1.1 mm / sec), and the average coefficient of friction in the forearm of the subject was measured.
【００２２】官能評価
i)専門パネル試験
専門パネルに対する試験では、べたつき感、油性感、し
っとり感、つるつる感、はり感、みずみずしさ、やわら
か感、なめらか感、ふっくら感を、官能指標として用い
た官能評価を行った。官能評価の評価基準は、以下の評
価基準を用いて行った。 Sensory evaluation i) Special panel test In the test on the special panel, a sensory feeling using stickiness, oiliness, moistness, smoothness, elasticity, freshness, softness, smoothness and plumpness as a sensory index. An evaluation was made. The sensory evaluation was performed using the following evaluation criteria.
【００２３】＜評価基準＞専門パネルの顔面の左右の一
方に基準品（試料Ｓ）を塗布して、他方に試験品（試料
Ａ〜Ｈの８種類の乳液）を塗布し、基準品に対する試験
品の官能評価を７点法（基準品＝０）でスコア化して判
定した。<Evaluation Criteria> A reference product (sample S) is applied to one of the right and left sides of the face of the professional panel, and test products (eight kinds of emulsions of samples A to H) are applied to the other face, and a test is performed on the reference product. The sensory evaluation of the product was scored and judged by a 7-point method (reference product = 0).
【００２４】すなわち、対象となる官能指標を基準品と
の比較において感じる度合いを、基準品と同等を０点と
し、官能指標を感じる最高点を３点、最低点を−３点と
して、−３〜３の１点刻みの７段階のスコアで、各々の
官能指標における判定を行った。That is, the degree of feeling the target organoleptic index in comparison with the reference product is set to 0 for the same level as the reference product, the maximum point at which the organoleptic index is felt is 3 points, and the minimum point is -3 points. Each of the sensory indexes was judged by 7-point score of 1 to 3.
【００２５】ii) 一般パネル試験
一般パネルに対する試験は、油性感、うるおい感、しっ
とり感、やわらか感、さっぱり感、かさつき感、はり
感、すべすべ感、を官能指標として用いた官能評価を行
った。Ii) General panel test In the test on the general panel, a sensory evaluation was carried out by using an oily feeling, a moisturizing feeling, a moist feeling, a soft feeling, a refreshing feeling, a dry feeling, a firm feeling, a smooth feeling as a sensory index. .
【００２６】＜評価基準＞一般パネル１５４名に、試験
品Ａ〜Ｈをそれぞれ３日間ずつ使ってもらい、官能評価
を行った。具体的には、各一般パネルが、まず、試験１
日目の夜、２日目の夜、および３日目の夜に、顔面に試
験品Ａを塗布し、試験４日目の朝の洗顔前に、試験品Ａ
の官能評価を４点法で行った。<Evaluation Criteria> A general panel of 154 people was allowed to use each of the test products A to H for 3 days, and sensory evaluation was performed. Specifically, each general panel first tested 1
On the night of the second day, the night of the second day, and the night of the third day, the test product A was applied to the face, and the test product A was applied to the face on the morning of the fourth day before washing.
The sensory evaluation of was carried out by the 4-point method.
【００２７】すなわち、
対象となる官能指標を非常に感じる ４点
対象となる官能指標を感じる ３点
対象となる官能指標をやや感じる ２点
対象となる官能指標を感じない １点
と、スコア化して、各々の官能指標における判定を行っ
た。That is, 4 points where the target sensory index is very felt, 4 points where the target sensory index is felt, 3 points where the target sensory index is slightly felt, 2 points where the target sensory index is not felt, and 1 point is scored. , Each sensory index was evaluated.
【００２８】次いで、各一般パネルは、試験４日目の
夜、５日目の夜、および６日目の夜に、顔面に試験品Ｂ
を塗布し、試験７日目の朝の洗顔前に、試験品Ｂの官能
評価を行い、その後、残りの試験品Ｃ〜Ｈについても順
次、同様にして、官能評価を行った。[0028] Each general panel was then placed on the face on the night of the 4th, 5th, and 6th day of the test.
Was applied, and the sensory evaluation of the test product B was performed before washing the face on the morning of the 7th day of the test, and then the remaining test products C to H were sequentially subjected to the sensory evaluation in the same manner.
【００２９】結果 専門パネル試験
i)４時間後の結果
第２表に、乳液の塗布４時間後の、各官能指標毎の平均
摩擦係数（ＭＩＵ）と変動係数（ＭＭＤ）の一覧を示
し、第１図に、ＭＩＵと各官能指標スコアとの相関の程
度を示し、第２図に、ＭＭＤと各官能指標スコアとの相
関の程度を示した。 Results Specialty panel test i) Results after 4 hours Table 2 shows a list of average friction coefficient (MIU) and coefficient of variation (MMD) for each sensory index 4 hours after application of the emulsion. FIG. 1 shows the degree of correlation between MIU and each sensory index score, and FIG. 2 shows the degree of correlation between MMD and each sensory index score.
【００３０】[0030]
【表２】 [Table 2]
【００３１】これらの表と図面に示す結果により、べた
つき感は、平均摩擦係数と１％の危険率の正の相関が認
められ、被験者の平均摩擦係数を計測することにより、
べたつき感を客観的な物理的パラメーターで数値化して
把握することが可能であることが明らかとなった。From the results shown in these tables and drawings, the sticky feeling has a positive correlation between the average friction coefficient and the risk rate of 1%. By measuring the average friction coefficient of the subjects,
It became clear that it is possible to quantify the sticky feeling with objective physical parameters.
【００３２】油性感は、平均摩擦係数と５％の危険率の
正の相関が認められ、被験者の平均摩擦係数を計測する
ことにより、油性感を客観的な物理的パラメーターで数
値化して把握することが可能であることが明らかとなっ
た。The oily feeling has a positive correlation between the average friction coefficient and the risk rate of 5%, and by measuring the average friction coefficient of the test subjects, the oily feeling can be numerically understood by objective physical parameters. It became clear that it is possible.
【００３３】しっとり感は、平均摩擦係数と１％の危険
率の正の相関が認められ、また、変動係数と５％の危険
率で正の相関が認められた。よって、被験者の平均摩擦
係数及び／又は変動係数を計測することにより、しっと
り感を客観的な物理的パラメーターで数値化して把握す
ることが可能であることが明らかとなった。Regarding the moist feeling, a positive correlation was recognized between the average friction coefficient and the risk rate of 1%, and a positive correlation was recognized between the coefficient of variation and the risk rate of 5%. Therefore, it was clarified that the moist feeling can be quantified and grasped by objective physical parameters by measuring the average friction coefficient and / or the variation coefficient of the subject.
【００３４】つるつる感とはり感は、それぞれ、平均摩
擦係数と５％の危険率の負の相関が認められ、被験者の
平均摩擦係数を計測することにより、つるつる感または
はり感を客観的な物理的パラメーターで数値化して把握
することが可能であることが明らかとなった。The slippery feeling and the supple feeling have a negative correlation between the average friction coefficient and the risk rate of 5%, respectively. By measuring the average friction coefficient of the test subject, the slippery feeling or the supple feeling is objectively measured. It has become clear that it is possible to understand numerically by using statistical parameters.
【００３５】ii) ７時間後の結果
第３表に、乳液の塗布７時間後の、各官能指標毎の平均
摩擦係数（ＭＩＵ）と変動係数（ＭＭＤ）の一覧を示
し、第３図に、ＭＩＵと各官能指標スコアとの相関の程
度を示し、第４図に、ＭＭＤと各官能指標スコアとの相
関の程度を示した。Ii) Results after 7 hours Table 3 shows a list of mean friction coefficient (MIU) and coefficient of variation (MMD) for each sensory index 7 hours after application of the emulsion, and FIG. The degree of correlation between MIU and each sensory index score is shown, and FIG. 4 shows the degree of correlation between MMD and each sensory index score.
【００３６】[0036]
【表３】 [Table 3]
【００３７】これらの表と図面に示す結果により、べた
つき感は、平均摩擦係数と５％の危険率の正の相関が認
められ、被験者の平均摩擦係数を計測することにより、
べたつき感を客観的な物理的パラメーターで数値化して
把握することが可能であることが明らかとなった。From the results shown in these tables and drawings, the sticky feeling was found to have a positive correlation between the average friction coefficient and the risk factor of 5%. By measuring the average friction coefficient of the subjects,
It became clear that it is possible to quantify the sticky feeling with objective physical parameters.
【００３８】油性感は、平均摩擦係数と５％の危険率の
正の相関が認められ、被験者の平均摩擦係数を計測する
ことにより、油性感を客観的な物理的パラメーターで数
値化して把握することが可能であることが明らかとなっ
た。The oily feeling has a positive correlation between the average friction coefficient and the risk factor of 5%, and by measuring the average friction coefficient of the test subjects, the oily feeling can be numerically understood by objective physical parameters. It became clear that it is possible.
【００３９】つるつる感は、平均摩擦係数と１％の危険
率の負の相関が認められ、また、変動係数と５％の危険
率の負の相関が認められた。よって、被験者の平均摩擦
係数及び／又は変動係数を計測することにより、つるつ
る感を客観的な物理的パラメーターで数値化して把握す
ることが可能であることが明らかとなった。Regarding the slippery feeling, a negative correlation between the average friction coefficient and the risk rate of 1% was recognized, and a negative correlation between the coefficient of variation and the risk rate of 5% was recognized. Therefore, it was revealed that it is possible to quantify and grasp the slippery feeling by objective physical parameters by measuring the average friction coefficient and / or variation coefficient of the subject.
【００４０】一般パネル試験
第４表に、乳液の塗布翌朝の、各官能指標毎の平均摩擦
係数（ＭＩＵ）と変動係数（ＭＭＤ）の一覧を示し、第
５図に、ＭＩＵと各官能指標スコアとの相関の程度を示
し、第６図に、ＭＭＤと各官能指標スコアとの相関の程
度を示した。 General panel test Table 4 shows a list of the average friction coefficient (MIU) and coefficient of variation (MMD) for each sensory index in the morning following application of the emulsion, and FIG. 5 shows MIU and each sensory index score. And the degree of correlation between MMD and each sensory index score are shown in FIG.
【００４１】[0041]
【表４】 [Table 4]
【００４２】これらの表と図面に示す結果により、油性
感は、平均摩擦係数と１％の危険率の正の相関が認めら
れ、被験者の平均摩擦係数を計測することにより、油性
感を客観的な物理的パラメーターで数値化して把握する
ことが可能であることが明らかとなった。From the results shown in these tables and drawings, the oily feeling was found to have a positive correlation between the average friction coefficient and the risk rate of 1%, and the oily feeling was objectively measured by measuring the average friction coefficient of the test subjects. It has been clarified that it is possible to quantify and grasp with various physical parameters.
【００４３】うるおい感は、平均摩擦係数と５％の危険
率の正の相関が認められ、被験者の平均摩擦係数を計測
することにより、うるおい感を客観的な物理的パラメー
ターで数値化して把握することが可能であることが明ら
かとなった。A positive correlation between the average coefficient of friction and the risk factor of 5% was found in the feeling of moisture, and by measuring the average coefficient of friction of the subject, the feeling of moisture was quantified and grasped by objective physical parameters. It became clear that it is possible.
【００４４】しっとり感は、平均摩擦係数と１％の危険
率の正の相関が認められ、また、変動係数と５％の危険
率で正の相関が認められた。よって、被験者の平均摩擦
係数及び／又は変動係数を計測することにより、しっと
り感を客観的な物理的パラメーターで数値化して把握す
ることが可能であることが明らかとなった。Regarding the moist feeling, a positive correlation was recognized between the average friction coefficient and the risk rate of 1%, and a positive correlation was recognized between the coefficient of variation and the risk rate of 5%. Therefore, it was clarified that the moist feeling can be quantified and grasped by objective physical parameters by measuring the average friction coefficient and / or the variation coefficient of the subject.
【００４５】さっぱり感とかさつき感は、それぞれ、平
均摩擦係数と１％の危険率の負の相関が認められた。よ
って、さっぱり感とかさつき感は、被験者の平均摩擦係
数を計測することにより、これらの官能指標を客観的な
物理的パラメーターで数値化して把握することが可能で
あることが明らかとなった。For the refreshing feeling and the feeling of bulkiness, a negative correlation between the average friction coefficient and the risk rate of 1% was recognized, respectively. Therefore, it was clarified that the feeling of freshness and the feeling of bulkiness can be understood by measuring the average coefficient of friction of the subject and digitizing these sensory indexes with objective physical parameters.
【００４６】なお、上記の専門パネル試験において、つ
るつる感が、一般パネル試験において、しっとり感が、
それぞれ平均摩擦係数及び／又は変動係数を計測するこ
とにより、客観的な物理的パラメーターで数値化して把
握することが可能であることが明らかとなっている。こ
のため、つるつる感としっとり感が複合化された官能指
標である、なめらか感も、平均摩擦係数及び／又は変動
係数を計測することにより、客観的な物理的パラメータ
ーで数値化して把握することが可能であることが示され
た。In the above-mentioned specialized panel test, a slippery feeling, and in a general panel test, a moist feeling,
By measuring the average friction coefficient and / or the coefficient of variation, it has been clarified that it is possible to quantify and grasp the objective physical parameters. For this reason, a smooth feeling, which is a sensory index in which a smooth feeling and a moist feeling are combined, can be grasped by quantifying an objective physical parameter by measuring an average friction coefficient and / or a coefficient of variation. It was shown to be possible.
【００４７】以上述べたように、皮膚摩擦に係わる指標
として、ヒトの皮膚の表面における、平均摩擦係数及び
／又は平均摩擦係数の変動係数を用いることにより、皮
膚についての官能評価を物理的なパラメーターを用い
て、化粧処理後の経時的な状態として客観化可能である
ことが判明した。As described above, by using the average coefficient of friction and / or the coefficient of variation of the average coefficient of friction on the surface of human skin as an index relating to skin friction, the sensory evaluation of the skin can be performed as a physical parameter. It has been found that it is possible to objectify as a state with time after makeup treatment by using.
【００４８】[0048]
【発明の効果】本発明により、皮膚摩擦に係わる指標を
用いた、官能評価との高い相関性を有する、in vivo の
皮膚の状態の評価を行う手段が提供される。INDUSTRIAL APPLICABILITY The present invention provides means for evaluating in vivo skin condition, which has a high correlation with sensory evaluation, using an index relating to skin friction.
【図１】専門パネル試験における、乳液の塗布４時間後
の、平均摩擦係数と各官能指標スコアとの相関の程度を
示した図面である。FIG. 1 is a drawing showing the degree of correlation between an average friction coefficient and each sensory index score in an expert panel test 4 hours after application of an emulsion.
【図２】専門パネル試験における、乳液の塗布４時間後
の、変動係数と各官能指標スコアとの相関の程度を示し
た図面である。FIG. 2 is a drawing showing the degree of correlation between the coefficient of variation and each sensory index score 4 hours after the application of an emulsion in a specialized panel test.
【図３】専門パネル試験における、乳液の塗布７時間後
の、平均摩擦係数と各官能指標スコアとの相関の程度を
示した図面である。FIG. 3 is a drawing showing the degree of correlation between the average friction coefficient and each sensory index score 7 hours after the application of an emulsion in a specialized panel test.
【図４】専門パネル試験における、乳液の塗布７時間後
の、変動係数と各官能指標スコアとの相関の程度を示し
た図面である。FIG. 4 is a drawing showing the degree of correlation between the coefficient of variation and each sensory index score 7 hours after the application of an emulsion in a specialized panel test.
【図５】一般パネル試験における、乳液の塗布の翌朝
の、平均摩擦係数と各官能指標スコアとの相関の程度を
示した図面である。FIG. 5 is a drawing showing the degree of correlation between the average friction coefficient and each sensory index score in the morning of application of an emulsion in a general panel test.
【図６】一般パネル試験における、乳液の塗布の翌朝
の、変動係数と各官能指標スコアとの相関の程度を示し
た図面である。FIG. 6 is a drawing showing the degree of correlation between the coefficient of variation and each sensory index score in the morning of application of an emulsion in a general panel test.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 元次 神奈川県横浜市都筑区早渕２−２−１ 株 式会社資生堂リサーチセンター（新横浜) 内 Ｆターム(参考） 4C083 AB432 AB442 AC012 AC022 AC102 AC122 AC392 AD072 AD092 AD152 AD162 AD352 BB01 DD31 EE11 EE50 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Genji Takahashi 2-2-1 Hayabuchi, Tsuzuki Ward, Yokohama City, Kanagawa Prefecture Shiseido Research Center (Shin-Yokohama) Within F-term (reference) 4C083 AB432 AB442 AC012 AC022 AC102 AC122 AC392 AD072 AD092 AD152 AD162 AD352 BB01 DD31 EE11 EE50
Claims (4)
及び／又は平均摩擦係数の変動係数と、皮膚の状態とを
関連付けて皮膚の状態を評価する、皮膚の状態の評価方
法。1. A method for evaluating a skin condition, wherein the skin condition is evaluated by associating the average friction coefficient and / or the coefficient of variation of the average friction coefficient with the skin condition on the surface of human skin.
感、べたつき感、油性感、しっとり感、つるつる感、は
り感、うるおい感、さっぱり感及びかさつき感からなる
群から選ばれる１種又は２種以上の官能指標である、請
求項１記載の皮膚の状態の評価方法。2. A sensory index representing the condition of the skin is one or more selected from the group consisting of smooth feeling, sticky feeling, oily feeling, moisturizing feeling, smooth feeling, astringent feeling, moisturizing feeling, refreshing feeling and dry feeling. The method for evaluating the condition of the skin according to claim 1, which comprises two or more sensory indexes.
／又はしっとり感である、請求項１記載の皮膚の状態の
評価方法。3. The method for evaluating the skin condition according to claim 1, wherein the sensory index indicating the skin condition is oily feeling and / or moisturizing feeling.
である、請求項１〜３のいずれかの請求項記載の皮膚の
状態の評価方法。4. The method for evaluating the condition of the skin according to claim 1, wherein the condition of the skin is a condition with time after the makeup treatment.
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|---|---|---|---|
| JP2001210907A JP2003024282A (en) | 2001-07-11 | 2001-07-11 | Method for evaluating skin state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001210907A JP2003024282A (en) | 2001-07-11 | 2001-07-11 | Method for evaluating skin state |
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| Publication Number | Publication Date |
|---|---|
| JP2003024282A true JP2003024282A (en) | 2003-01-28 |
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ID=19046308
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|---|---|---|---|
| JP2001210907A Withdrawn JP2003024282A (en) | 2001-07-11 | 2001-07-11 | Method for evaluating skin state |
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| JP2011110354A (en) * | 2009-11-30 | 2011-06-09 | Pola Chemical Industries Inc | Method for distinguishing skin characteristics by using high-speed camera |
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| JP2011110354A (en) * | 2009-11-30 | 2011-06-09 | Pola Chemical Industries Inc | Method for distinguishing skin characteristics by using high-speed camera |
| JP2016022093A (en) * | 2014-07-18 | 2016-02-08 | 富士フイルム株式会社 | Perceived moistness evaluation device, perceived moistness evaluation method, and perceived moistness evaluation program |
| JP2017072397A (en) * | 2015-10-05 | 2017-04-13 | 株式会社 資生堂 | Functionality evaluation method for cosmetic using hair keratin film |
| JP2017225583A (en) * | 2016-06-21 | 2017-12-28 | 花王株式会社 | Evaluation method of skin condition |
| JP2018068601A (en) * | 2016-10-28 | 2018-05-10 | ロレアル | Method for informing user about state of human keratinous substances |
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| WO2019093179A1 (en) | 2017-11-09 | 2019-05-16 | 大王製紙株式会社 | Tissue paper and tissue paper evaluation method |
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