JP2003028856A - Method and map for judgement of skin state - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a map for the judgment of a skin state wherein the skin state can be judged accurately. SOLUTION: On the basis of two indexes, i.e., the stratified degree and the rough dry skin state of corneum from many corneum images obtained from many subjects, a typical example is selected so as to be arranged on a two-axis coordinate diagram as a coordinate point, and the map is created (an arrangement process). A corneum image to be judged is obtained from a subject to be judged (an acquisition process). The coordinate point on the two-axis coordinate diagram of the corneum image to be judged is recognized (a recognition process). On the basis of the stratified degree and the rough dry skin degree of the corneum in the recognized coordinate point, the state of the corneum on the skin of the subject to be judged is judged (a judgment process).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin condition judging method and a skin condition judging map, and more particularly to a skin condition judging method and a skin condition judging map for judging the condition of the stratum corneum of the skin.

[0002]

2. Description of the Related Art The most important physiological function of the epidermis is to form an outer skin, which is a stratum corneum, which serves as a protective barrier against various physical and chemical stimuli from the outside such as dryness and ultraviolet rays.

The epidermis moves to the surface layer while sequentially changing into basal cells, spiny cells and granule cells, and finally becomes keratinocytes. This process of differentiation of epidermal cells is called keratinization.

Corneal cells are formed one after another, but since the oldest keratinocytes in the outermost layer are exfoliated, they maintain a substantially constant thickness. In this way, constantly replacing with a new cell layer is called turnover, and the epidermal turnover (turnover cycle) is usually said to be about 6 weeks.

However, for example, when an external stimulus such as dryness or ultraviolet rays is suddenly received, it reacts sensitively to this, and the basal cell division becomes active so as to recover the damage of the epidermis, and the turnover speed is increased. Is faster than usual. As a result, many immature cells are formed, and because these immature cells have incomplete water retention and barrier functions,
Exfoliation of keratinocytes is not performed smoothly, resulting in a rough skin condition (parakeratosis).

On the other hand, for example, with aging, the function of the basal cells themselves generally decreases, so that the turnover speed becomes slower than usual.

In addition to these changes in turnover, in other words, turnover disorder,
The degree varies depending on the part of the body.

[0008] Whether or not there is a turnover disorder is accurately determined, and depending on the degree of turnover disorder as a result of the determination, an appropriate skin care cosmetic is prescribed to determine the barrier function or protective action of the epidermis. Restoring and leading the skin to healthy and beautiful skin is important in beauty counseling. Further, accurately determining the presence / absence and the degree of turnover disorder have great significance in the research and development of skin care cosmetics.

Conventionally, turnover malfunction determination (hereinafter,
It is called judgment of skin condition. ) Is performed by visually observing an enlarged photograph or an enlarged image of keratinocytes exfoliated from the skin of the subject using a transparent adhesive tape and making a visual observation to judge.

[0010]

However, in the above-described conventional method for determining a skin condition, the turnover speed becomes faster than usual by observing an enlarged photograph of keratinocytes. The reality is that only the degree of rough skin condition is judged, and in this case, changes in skin condition due to slower than normal turnover speed are not taken into consideration, and therefore It is not always sufficient as a method of judging the state.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a skin condition judging method and a skin condition judging map capable of accurately judging the skin condition.

[0012]

The skin condition judging method according to the present invention is characterized in that the condition of the stratum corneum of the skin is judged on the basis of two indexes of the degree of stratum corneum stratification and the degree of rough skin.

Here, stratification of stratum corneum means that the stratum corneum is thick, which occurs when the turnover speed becomes slower than usual. In other words, there is no gap in the stratum corneum when viewed as an image, and It means a state that looks bright. In addition, the rough skin refers to a state in which the texture is disturbed, which is caused by an increase in turnover speed than usual, in other words, a state in which exfoliation of the stratum corneum has progressed.

With the above-mentioned constitution, the present invention can accurately judge the skin condition and can contribute to the research and development of beauty counseling and skin care cosmetics.

Conventionally, for example, when deciding the skin condition of the cheeks of the face, etc., an enlarged photograph or an enlarged image of keratinous cells exfoliated from the skin using a transparent adhesive tape after washing the face with a face wash (hereinafter, this keratin tape stripping is used. The image is called the stratum corneum image). In this case, since the transparent adhesive tape was attached to the skin where the upper layer of the stratum corneum was peeled off by the face wash, the state before the upper layer of the stratum corneum was peeled off by the face wash, that is, the true skin condition when stratification occurred. Can be said to have not been judged.

On the other hand, according to the present invention, the condition of the stratum corneum of the skin is judged based on the two indexes of the degree of stratum corneum stratification and the degree of rough skin, so that the condition of the skin can be judged more accurately. You can In this case, before applying the transparent adhesive tape to the skin, the skin is wiped with a makeup remover containing as little moisturizer as possible to remove sebum and dirt while minimizing the influence on the state of the stratum corneum.

Further, the skin condition judging method according to the present invention selects a typical example from a large number of stratum corneum images obtained from a large number of subjects based on two indexes of stratification of stratum corneum and rough skin and biaxially. An arrangement step of arranging as coordinate points on the coordinate diagram, an acquisition step of obtaining a judgment target stratum corneum image from a subject to be judged, and a coordinate point on the biaxial coordinate diagram of the judgment target stratum corneum image are identified. It is preferable to have an authorization step and a determination step of determining the state of the stratum corneum of the skin of the subject to be determined from the degree of stratum corneum stratification and the degree of skin roughness at the certified coordinate points.

The skin condition judgment map according to the present invention is
It is characterized in that a typical example is selected from a large number of stratum corneum images obtained from a large number of subjects based on two indices of stratification of stratum corneum and rough skin and arranged as coordinate points on a biaxial coordinate diagram. To do.

Here, the map may be displayed on a tangible material such as paper or a thin plate, or may be displayed on the display device as an image.

With the above-mentioned constitution of the present invention, the skin condition can be accurately judged, which can contribute to the research and development of beauty counseling and skin care cosmetics.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of a skin condition determining method and a skin condition determining map according to the present invention (hereinafter referred to as the present embodiment) will be described with reference to FIGS.
This will be described below. (Arrangement step) First, a stratum corneum image is obtained for a large number of subjects, and these stratum corneum images (stratum corneum image data) are used as coordinate points on a biaxial coordinate diagram based on two indices of stratification degree and rough skin degree. Deploy.

The stratum corneum images of many subjects are obtained by the following procedure. The same applies to the subject to be judged.

First, the cheek, which is the measurement point of the subject, is wiped off with a makeup remover containing as little moisturizer as possible. After a lapse of about 5 minutes, the adhesive transparent tape is lightly attached to the cheek of the subject and immediately peeled off. At this time, the keratin is peeled off from the skin while being attached to the adhesive transparent tape. Then, as shown in FIG.
The camera 12 takes an image of the adhesive transparent tape 10 to which keratin is attached.

Next, the image information picked up by the camera 12 is taken into a personal computer, for example, and is displayed as a stratum corneum image 16 on the display device 14 as shown in FIG.

The stratum corneum images of many subjects are classified according to the following criteria. (1) The stratum corneum image (A) in which the peeled state is observed is defined as an image showing rough skin. (2) The stratum corneum image (B) in which the stratum corneum appears thick is defined as an image showing stratification. (3) The stratum corneum image (C) in which only exfoliated skin is not observed and the peeling state is not defined is defined as an image showing a good skin condition. (4) The stratum corneum image (C) is arranged at the reference point (zero point) on the biaxial coordinate diagram. The vertical axis is the axis showing the stratum corneum image (A), that is, the axis showing the degree of rough skin, and the stratum corneum image group is classified in the vertical axis direction according to the degree of peeling. The horizontal axis is the axis showing the stratum corneum image (B), that is, the axis showing the degree of stratification, and the degree of thickness, in other words, the degree of gaps (density) of the stratum corneum and the degree of brightness of the image are in the horizontal axis direction. The stratum corneum image group is classified into. (5) A large number of stratum corneum images obtained from a large number of subjects are
It is arranged as a coordinate point on the coordinate plane. In practice, a typical example is selected and arranged from a large number of stratum corneum images based on two indices of the degree of stratum corneum stratification and the degree of rough skin.

The map (skin condition judgment map) obtained by the above procedure is shown in FIG. Here, five representative ones are extracted and arranged from a large number of stratum corneum images. Figure
4 In the lower left corner of the image, the stratum corneum image in which both the stratification and the degree of skin roughness are small, the state in which the stratum corneum is thinly and uniformly peeled off is observed. On the other hand, the stratum corneum image located on the right side in FIG. 4 and having a large degree of stratification is
It was observed that the keratin was thick and peeled off uniformly, while
A large exfoliated mass is observed in the stratum corneum image located on the upper left and having a large degree of rough skin. However, the present invention is not limited to this, and a larger number of stratum corneum images may be classified and arranged.
A score is assigned to each of the two axes as necessary (not shown).

This map is, for example, printed on a sheet or stored as data in a personal computer.

A procedure for determining the skin condition (condition of the stratum corneum of the skin) of the subject to be judged using the above map will be described below. (Acquisition Step) First, by the above-described method, a subject to be determined has a stratum corneum image to be determined (the above-mentioned stratum corneum image 1
The same reference numeral as 6 is attached. ) 16 is obtained. At this time,
For example, as shown in FIG. 2, while displaying the determination target stratum corneum image 16 captured on the screen of the display device 14,
The image analysis data 18 regarding the degree of stratification of stratum corneum, the state of turnover, etc. are also displayed in a graph. (Certification process) Next, the map of the stratum corneum image to be judged (2
Authorize the coordinate points on the (axis coordinate diagram). At this time, for example, as shown in FIG. 3, the determination target stratum corneum image 16 and the map 20 are displayed on the same screen, and the determination target stratum corneum image 16 is the same as any stratum corneum image of the map 20, Or it is certified whether it approximates. (Judgment step) Then, the state of the stratum corneum of the skin of the subject to be judged is judged from the degree of stratification and the degree of skin roughness at the recognized coordinate points.

By using the skin condition judging method and the skin condition judging map according to the present embodiment described above,
It is possible to accurately judge the skin condition and contribute to research and development of beauty counseling and skin care cosmetics.

In this embodiment, the skin condition judgment map is loaded into a personal computer, saved, and appropriately displayed on the screen for use. In this case, one of the skin condition judgment maps is used as necessary. It is possible to easily update an image of a part or all images, and easily and immediately receive and use it at a cosmetics store nationwide through an information communication network such as the Internet. Further, when the skin condition determination map is used in the form of a printed material instead of this, for example, by distributing it to a cosmetics store, it can be used by simple handling.

[0031]

According to the skin condition judging method of the present invention,
Since the condition of the stratum corneum of the skin is judged based on two indices, the degree of stratum corneum stratification and the degree of skin roughness, it is possible to accurately judge the skin condition and contribute to research and development of beauty counseling and skin care cosmetics. it can.

Further, according to the skin condition judgment map of the present invention, a typical example is selected from a large number of stratum corneum images obtained from a large number of subjects based on two indexes of stratification of stratum corneum and rough skin. Since they are arranged as coordinate points on the biaxial coordinate diagram, the skin condition can be accurately judged, which can contribute to research and development of beauty counseling and skin care cosmetics.

[Brief description of drawings]

FIG. 1 is a view for explaining a method of collecting stratum corneum image data and showing an adhesive transparent tape and a camera.

FIG. 2 is a diagram showing a state in which stratum corneum image data is displayed on a screen of a display device.

FIG. 3 is a diagram showing a state in which a stratum corneum image map and stratum corneum image data are displayed on a screen of a display device.

FIG. 4 is a diagram showing a stratum corneum image map.

[Explanation of symbols]

10 Adhesive transparent tape 12 cameras 14 Display 16 stratum corneum image 18 Image analysis data 20 maps

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tomohiro Kuwahara             2-2-1 Hayabuchi, Tsuzuki Ward, Yokohama City, Kanagawa Prefecture             Shiseido Research Center (Shin-Yokohama)             Within F-term (reference) 2G045 AA40 CB09 FA19 GB10 GC30

Claims (3)

[Claims] 1. A method for determining a skin condition, characterized in that the condition of the stratum corneum of the skin is judged based on two indexes of the degree of stratum corneum stratification and the degree of skin roughness. 2. An arrangement in which a typical example is selected from a large number of stratum corneum images obtained from a large number of subjects based on two indices of stratification of stratum corneum and rough skin and arranged as coordinate points on a biaxial coordinate diagram. A process, an acquisition process of obtaining a judgment target stratum corneum image from a judgment subject, a certification process of certifying a coordinate point on the biaxial coordinate diagram of the judgment subject stratum corneum image, and the certified coordinate point And a step of determining the state of the stratum corneum of the skin of the subject, which is a determination target, based on the degree of stratum corneum stratification and the degree of skin roughness. 3. A typical example is selected from a large number of stratum corneum images obtained from a large number of subjects based on two indexes of stratification of stratum corneum and rough skin and arranged as coordinate points on a biaxial coordinate diagram. A skin condition determination map characterized by: