KR102024631B1 - The method for identifying skin type - Google Patents

Abstract

The present invention relates to a novel method for determining the skin type according to the skin constitution, and provides a method for determining the skin type by measuring the temperature and thickness of the skin.

Description

The method for identifying skin type

The content described herein relates to a novel method of determining the skin type according to the constitution of the skin.

The skin is divided into three layers of epidermis, dermis, and subcutaneous fat tissue in order from the outside, and protects the body from physical and chemical stimuli from the external environment. It controls the evaporation of ~ 70% of moisture out of the body. Among them, the epidermis is divided into the stratum corneum, granule layer, polar layer, and basal layer from the outside. The stratum corneum of the epidermis contains about 10-20% of moisture and exists at the outermost part of the human body to suppress evaporation of moisture from the body. Blocks material invasion from outside (J. Invest. Dermatol. 80 (Suppl.), 44-49. 1983). The cells constituting the stratum corneum contain high concentrations of natural moisturizing factor (NMF), which are water-soluble ingredients, which help the skin to show flexibility and maintain proper moisture (J. Invest. Dermatol. 54, 24-31, 1970).

However, because of the different constitutions of skin temperature and thickness, different internal factors may cause differences in skin constitution such as moisture, oil content, elasticity, and roughness of each skin. Changes in stress, environmental pollution, frequent face-washing caused by makeup habits, and natural skin aging due to age increase reduce moisture in the stratum corneum, resulting in dry and rough skin. Loss and dull appearance occurs. In addition, there are differences in the influence of external factors on the skin depending on internal factors such as individual skin constitution.

Therefore, in order to maintain and improve the fundamental skin type, it is necessary to understand the constitution of the skin and to select a suitable method.

J. Invest. Dermatol. 80 (Suppl.), 44-49. 1983 J. Invest. Dermatol. 54, 24-31, 1970

The present invention seeks to provide a novel method for determining skin type according to skin constitution.

In order to achieve the above object, one embodiment of the present invention provides a method for determining the skin type by measuring the temperature and thickness of the skin.

In addition, an embodiment of the present invention

(a) measuring the temperature and thickness of the subject skin;

(b) determining the skin constitution group to which the measurement belongs; and

(c) it provides a skin type determination method comprising the step of predicting the skin type according to the skin constitution group.

The method according to the present invention provides the effect of simply predicting skin type such as moisture, oil content, roughness, elasticity, etc. of the skin only by measuring the temperature and thickness of the skin.

As a result, the predicted skin type results may be used to select cosmetics and medicines suitable for the skin type, and the amount, order of use, and timing of use thereof may be determined.

This makes it easy to manage and maintain the skin type, and can be fundamentally complemented and improved to the desired skin condition. Therefore, it can be variously used in cosmetics and medicine.

1 is a view showing the temperature and thickness of the skin by the method according to an embodiment of the present invention, the difference in the amount of skin moisture accordingly.
2 is a view showing the difference in skin roughness by measuring the temperature and thickness of the skin by the method according to an embodiment of the present invention.
Figure 3 is a view showing the difference in the amount of skin oil according to the measurement of the temperature and thickness of the skin by the method according to an embodiment of the present invention.
4 is a view showing the temperature and thickness of the skin by the method according to an embodiment of the present invention, and shows the difference in skin elasticity accordingly.

As used herein, the term "skin" refers to a tissue covering the body surface of an animal, and is a broad concept including not only tissues covering the body surface such as the face or body, but also the scalp and hair.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

One embodiment of the present invention provides a method of determining the skin type by measuring the temperature and thickness of the skin.

In addition, an embodiment of the present invention

(a) measuring the temperature and thickness of the subject skin;

(b) determining the skin constitution group to which the measurement belongs; and

(c) the skin type may be determined by a method comprising the step of predicting the skin type according to the skin constitution group.

In addition, as an embodiment of the present invention, the method further includes the step of dividing into a plurality of skin constitution groups according to the skin type before step (a) and predetermining skin type characteristics of each skin constitution group. can do.

The skin constitution group can be divided on the basis of the case where the skin temperature, which is the normal skin temperature and skin thickness, is greater than 30 ° C. and less than 31 ° C., and the skin thickness is more than 3 mm and less than 3.5 mm. Based on the skin temperature and thickness range as a reference point, the skin constitution group

Group 1 whose skin temperature is below the reference point and the skin thickness is above the reference point;

Two groups of skin temperature above the reference point and skin thickness below the reference point;

3 groups of skin temperature above the reference point and skin thickness above the reference point; and

Group 4 with skin temperature below the reference point and skin thickness below the reference point;

It may include.

Skin types determined by the method of one embodiment of the invention include all skin types that can be distinguished without limitation. Skin types include, for example, skin moisture, oil content, oil content, roughness, elasticity, inflammation, skin dead skin, and transdermal moisture loss.

The skin to be measured in the method according to an embodiment of the present invention is not limited, and includes all tissues covering the body surface of the body, such as the face, hands, and scalp. In addition, the structure of the skin may include not only the epidermis and the dermis, but also subcutaneous fat.

At this time, the method for measuring the temperature and thickness of the target skin is not limited and may be measured by all methods commonly used in the art.

According to an embodiment of the present invention, the skin type may be predicted according to the temperature of the skin. For example, when the skin temperature is lower than the reference temperature, the skin moisture is lower than that of the normal skin. If the temperature is higher than the reference temperature, the moisture may be higher than the normal skin. If the skin temperature is lower than the reference temperature, the oil content is lower than the normal skin. If the skin temperature is higher than the reference temperature, the skin oil content is higher than the normal skin. In addition, when the skin temperature is lower than the reference temperature it can be expected that the skin elasticity is lower than the normal skin, and if the skin temperature is higher than the reference temperature, the skin elasticity is higher than the normal skin.

According to another embodiment of the present invention, the skin type may be predicted according to the thickness of the skin. For example, if the thickness of the skin is thinner than the reference thickness, the oil content is lower than the normal skin, and if the thickness is thicker than the skin thickness, it can be predicted that the oil content is higher than the normal skin. In addition, when the thickness of the skin is thinner than the reference thickness, the skin roughness is less than the normal skin, and when the thickness is thicker than the reference skin, the skin roughness can be predicted to be larger than the normal skin. If skin elasticity is small and thicker than the reference thickness, skin elasticity can be expected to be higher than normal skin.

Therefore, according to an embodiment of the present invention, if the target skin belongs to one group of the skin constitution group, it can be predicted that the skin has one or more of low moisture and high roughness compared to normal skin, and if it belongs to the second group, the skin Can be expected to have one or more of a high moisture feel and high elasticity compared to normal skin.

In addition, if the target skin belongs to the third group of skin constitution group, the skin can be predicted to have one or more of high moisture feeling, high oil content, high roughness and high elasticity compared to the normal skin, and if belonging to the fourth group, the skin is normal skin It can be expected to have one or more of low moisture feeling, low oil content and low elasticity.

As described above, according to the skin type determination method of the present invention, the skin constitution is determined only by measuring the temperature and thickness of the skin, thereby providing an effect of easily predicting the skin type such as moisture, oil content, roughness, elasticity, etc. of the skin. do.

In this way, by predicting the skin type by the method according to the present invention, it is possible to select a kind and a method of using the cosmetics or the medicament suitable for the skin type, and it is easy to maintain or improve the skin type.

Hereinafter, the present invention will be described through the following examples and experimental examples. Examples and Experimental Examples are intended to describe the present invention in more detail, but the scope of the present invention is not limited to the scope of the following examples.

In addition, it is obvious that any person skilled in the art can make various modifications and imitations within the scope of the appended claims without departing from the scope of the technical idea of the present invention.

Examples 1 to 4 were carried out in order to divide into skin constitution groups according to skin types and to determine skin type characteristics of each skin constitution group in advance.

Example 1 Measurement of moisture content according to skin temperature and thickness

An experiment was conducted to measure the amount of moisture according to the temperature and thickness of the skin.

Skin moisture content was measured using Corneometer CM 825 (C & K Electronic GmbH, Germany), a device for measuring capacitance in vivo. After washing the skin of the test subjects with a detergent before measurement, the evaluation was performed after 20 minutes of stability in a constant temperature and humidity room (20-21 ° C, 48-50%). The front face of the cheek was measured three times and the average value was obtained.

As a result of the measurement, as shown in FIG. 1, the skin having a temperature below the reference point of 30 ° C. was measured to have a very low skin moisture content of about 34 to 38 Skin Capacitance (AU) (moisture of FIG. 1), and the temperature was above 32 ° C. The skin was measured to have a high skin moisture content of about 43 ~ 46 Skin Capacitance (AU) (moisture_heat of Figure 1).

In addition, for skin with a skin thickness of 3.5 mm or more, the skin moisture content is about 41 to 46 Skin Capacitance (AU) (after moisture_of FIG. 1), and for skins with a skin thickness less than 3 mm, the skin moisture content is about 43 to 45 Skin Capacitance ( AU) (moisture_night in FIG. 1).

Taken together, the skin moisture is mainly influenced by the skin temperature, and in groups 1 and 4 where the skin temperature is below the reference point, groups 2 and 3 in which the skin temperature is lower than the normal skin and the skin temperature are above the reference point are normal skin. It can be expected to have a high moisture feeling in comparison.

Example 2 Measurement of Oil Content According to Skin Temperature and Thickness

An experiment was conducted to measure the amount of oil according to the temperature and thickness of the skin.

Skin oil was measured by Sebumeter (MPA580, C + K, Germany), and the amount of sebum that came out by contacting the translucent Sebum tape on the skin surface of the subject was measured by optical reflection principle. The semi-transparent sebum tape was used for each measurement, and the value after skin measurement was expressed in ㎍ / ㎠. In this experiment, the value obtained by measuring the skin surface at the same position once was used as the measured value.

As a result, as shown in FIG. 2, the skin having a temperature lower than the reference point of 30 ° C was measured to have a very low skin oil content of about 13 to 20 Sebum content (AU) (oil content of FIG. 2), and the temperature was higher than the reference point of 32 ° C. The skin was measured relatively high as the skin oil content of about 25 ~ 29 Sebum content (AU) (oil_heat of Figure 2).

In addition, skin oil having a skin thickness of 3.5 mm or more at the reference point was measured to have a very high skin oil content of about 32 to 41 Sebum content (AU) (after oil_of FIG. 2), and skin having a skin thickness of less than 3 mm having a skin thickness of less than the reference point was about 3%. It was measured very low with 12-19 Sebum content (AU) (oil fraction per night).

Taken together, the results indicate that skin oil content is affected by both skin temperature and thickness, and in particular by skin thickness. Therefore, three groups with skin temperature above the reference point and skin thickness above the reference point have a higher oily feeling than normal skin, and four groups with skin temperature below the reference point and skin thickness below the reference point have a lower oil feeling than normal skin. have.

Example 3 Measurement of Skin Roughness According to Skin Temperature and Thickness

An experiment was conducted to measure skin roughness according to the temperature and thickness of the skin.

Skin roughness was achieved by measuring facial regions at each evaluation time point using an optical three-dimensional skin measuring device, PRIMOS (Phaseshift Rapid In vivo Measurement Of Skin, GFMesstechnik GmbH, Germany). The three-dimensional measurement of PRIMOS can be measured by using the parallel projection stripes projected on the skin to change according to the height difference of the skin surface, and the roughness of the skin can be obtained by quantitatively calculating the degree of change on the connected computer. If the value of the variable is large, it means that the skin texture is rough.

As a result, as shown in FIG. 3, the skin having a temperature below the reference point of 30 ° C. was measured to have a skin roughness of about 3 to 4 Ra (μm) (skin texture of FIG. 3), and the skin having a temperature above 32 ° C. Skin roughness was similarly measured at about 2-4 Ra (μm) (skin texture_heat in FIG. 3).

In addition, skin with a skin thickness of 3.5 mm or more at the reference point was measured to have a high skin roughness of about 4 to 10 Ra (μm) (after the skin texture _ of FIG. 3). It was measured relatively low as 3-9 Ra (μm) (skin texture_bak of FIG. 3).

Taken together, the results suggest that skin roughness is primarily affected by skin thickness. Therefore, it can be predicted that Groups 1 and 3 having a skin thickness greater than or equal to the reference point have a higher roughness than normal skin, and Groups 2 and 4 having a skin thickness below the reference point have lower roughness than the normal skin.

Example 4 Measurement of Skin Elasticity According to Skin Temperature and Thickness

An experiment was performed to measure the skin elasticity according to the temperature and thickness of the skin.

Skin elasticity was measured using Cutometer MPA580. Cutometer MPA580 is a device that measures the elasticity of the dermis by inhaling the skin with negative pressure and applies it to the skin with a negative pressure of 450mb through the chamber / probe. In this experiment, the measurement was repeated three times for each part of the skin surface at the same location, and the average value was used as the measured value.

As a result, as shown in FIG. 4, the skin having a temperature below the reference point of 30 ° C. has a low skin elasticity of about 25 to 32 (AU), and the skin having the temperature above 32 ° C. has a skin elasticity of about 25 to 32 (AU). Elasticity was measured to be relatively high, about 30-36 (AU) (elasticity_heat in FIG. 4).

In addition, the skin thickness of the skin more than the reference point 3.5 mm was measured as skin elasticity of about 32 ~ 39 (AU) (after the elasticity of Figure 4), the skin thickness of less than 3mm skin thickness is less than the reference point 30 ~ 34 Measured as (AU) (elasticity_night in FIG. 4).

Taken together, the results indicate that skin elasticity is affected by both skin temperature and thickness, in particular by skin temperature. Therefore, it can be predicted that two groups having a skin temperature of more than a reference point have higher skin elasticity than normal skin, and four groups having a skin temperature of less than the reference point and a skin thickness of less than the reference point have lower skin elasticity than normal skin.

Example 5 Skin Type Discrimination Test

According to the skin type discrimination method according to the present invention, the skin temperature and thickness of the face were measured for 50 adult women aged 35 ± 1.4 years. At this time, the temperature was measured by analyzing the image of the image using an IR camera, the skin thickness was measured by using a professional pinch test and a dedicated person.

After the measurement, two of the remaining women were selected, except for women with normal skin temperature and thickness where the skin temperature was greater than or equal to the reference point (greater than 30 ° C. and less than 31 ° C.) and the skin thickness was greater than or equal to the reference point (more than 3 mm and less than 3.5 mm). According to the skin type determination method according to an embodiment of the skin type was determined and confirmed.

 First, in case of adult female A whose skin temperature is 32 ° C. and skin thickness is 2.8 mm, the skin temperature is above the reference point and the skin thickness is below the reference point. It was expected to have As a result of measuring skin moisture content and elasticity, skin moisture content was about 44 (A.U) and elasticity was about 30 (A.U.), and all of them had higher moisture content and elasticity than normal skin. Therefore, the skin type predicted from the skin constitution such as skin temperature and thickness by the method according to an embodiment of the present invention was confirmed that almost matched with the actual measurement results.

In addition, in case of adult female B having skin temperature of 32 ° C. and skin thickness of 3.5 mm, skin temperature is above the reference point and skin thickness is above the reference point. It was expected to have one or more of high elasticity. In fact, as a result of measuring skin moisture content and elasticity, skin moisture content was about 45 (AU), oil content was about 34 (AU), roughness was about 7 Ra (㎛), and elasticity was about 35 (AU). It has higher moisture and oil content than skin and has high roughness and elasticity. Therefore, the skin type predicted from the skin constitution such as skin temperature and thickness by the method according to an embodiment of the present invention was confirmed that almost matched with the actual measurement results.

As described above, according to the skin type determination method according to the present invention, it is possible to easily predict the skin type such as the moisture content, oil content, skin roughness and elasticity of the skin according to the skin constitution.

Claims (12)

As a method of determining the skin type by measuring the temperature and thickness of the skin using a measuring device,
(a) dividing into a plurality of skin constitution groups according to skin temperature and thickness reference points and setting skin type characteristics of each skin constitution group;
(b) measuring the temperature and thickness of the subject skin;
(c) determining a skin constitution group of the subject based on a plurality of skin constitution group classifications preset according to the measured temperature and thickness of the subject skin; And
(d) predicting the skin type of the subject according to the determined skin constitution group. delete delete The method of claim 1, wherein the skin constitution group
Group 1 whose skin temperature is below the reference point and the skin thickness is above the reference point;
Two groups of skin temperature above the reference point and skin thickness below the reference point;
3 groups of skin temperature above the reference point and skin thickness above the reference point; and
Group 4 with skin temperature below the reference point and skin thickness below the reference point;
Skin type determination method comprising a. The method of claim 4, wherein the reference point of the skin temperature is 30 to 31 ° C., and the reference point of the skin thickness is 3 to 3.5 mm. 2. The method of claim 1, wherein the skin type to be determined is one or more of moisture, oil content, roughness and elasticity of the skin. The method of claim 1, wherein the skin to be measured is the skin of a hand or face. The method of claim 1, wherein the skin is the epidermis of the skin. The method of claim 4, wherein the skin group is one group among the skin constitution groups, and the skin is predicted to have at least one of low moisture content and high roughness compared to normal skin. The skin type determination method according to claim 4, wherein the skin group is predicted to have at least one of high moisture content and high elasticity compared to normal skin. The skin type determination method according to claim 4, wherein the skin group is predicted to have one or more of high moisture content, high oil content, high roughness, and high elasticity compared to normal skin. 5. The method according to claim 4, wherein the group of skin constituents predicts that the skin has at least one of low moisture content, low oil content and low elasticity compared to normal skin.

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