• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.475-486
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• 2022

The purpose of this study is to provide the service marketing data for skincare shops through analyzing the impact of the quality of service of skincare shops on perceived values and revisit intents. For this study, 397 middle-aged women who visited and experienced the services of the skincare shops in Seoul and the Gyeonggi region were surveyed. The data from the said survey were analyzed using SPSS 23.0 and AMOS 23.0. The findings of this study were as follows; first, the formality, reliability, certainty, and empathy among the service factors of skincare shops had a significant impact on economic values, while trust, certainty, and empathy had an impact on emotional values. Second, the formality, reliability, and empathy had a significant impact on revisit intent for skincare shops. Third, among the perceived values on skincare shops, both economic and emotional values had a significant impact on the intent to revisit. Fourth, the perceived values were confirmed to have partial mediating effects in the relationship between the quality of service of skincare shops and revisit intent for each service quality type.

• The Korean Journal of Pesticide Science
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• v.14 no.2
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• pp.79-85
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• 2010

This study was investigated to review the potentials of irritation and skin sensitization of active ingredients and end-use products of pesticides for pesticide registration, prediction of irritation and sensitization, and data requirements for other purposes. Pesticide irritation and sensitization referred to the Pesticide Manual(14th edition), while toxicity was evaluated based on the data submitted by the pesticide registrant. Totally 148 active ingredients and 149 end-use products were analyzed to compare the positive response, formulation type, and correlation between active ingredients and products. Among active ingredients, ratio of positive response to skin irritation, eye irritation, and skin sensitization were 18.8, 47.0 and 20.6% respectively. While, positive response to skin irritation, eye irritation, and skin sensitization of the products were 14.9, 38.9 and 23.6%, respectively. Emulsifiable concentrate showed the highest positive response among formulation types showing skin irritation 31.3%, eye irritation 81.3%, and skin sensitization 31.3%. On the other hand granule type showed the lowest response with skin 4.8, eye 14.3 and sensitization 14.8%. There was no correlation by active ingredient content on irritation and sensitization of products. However, both active ingredients and products showed same positive response were skin 73.1%, skin sensitization 66.2%, and eye irritation 44.7%. By the these results, correlation between technical grade of active ingredients and end-use products would be use for pesticide management at the screening stage, especially skin irritation and skin sensitization.

• Journal of the Korean Applied Science and Technology
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• v.38 no.6
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• pp.1493-1501
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• 2021

The purpose of this study is to investigate the effect of emotional dissonance and service sabotage on skin experts who have experienced inappropriate customer behavior. To achieve the purpose of the study. 383 skin experts in Seoul and Gyeonggi-do were selected as the subjects of the study. As for the analysis method, frequency analysis, factor analysis, reliability analysis, correlation analysis, and multiple regression analysis were performed, and the following research results were derived through such research procedures. Inappropriate customer behavior showed a positive (+) correlation with emotional dissonance, and emotional suppression of emotional dissonance affects service sabotage.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.38 no.1
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• pp.75-82
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• 2012

Natural moisturizing factors (NMFs) are hydrophilic and water-soluble components in stratum corneum of the skin. NMFs absorb water from outer environment and enhance the water-holding capacity of stratum corneum and thereby, prevent the dryness and increase flexibility and plasticity of skin. NMFs are mainly composed of amino acids and their metabolites that are produced from the degradation of filaggrin. Here we established a simultaneous quantification method for 22 amino acids in tape-stripped stratum corneum samples using UPLC-PDA. With this method, we analyzed amino acid contents from tape-stripped stratum corneum samples of forearm and forehead regions from 15 healthy volunteers. Amino acid contents of inner (or upper) region were higher than outer (or lower) region of stratum corneum. Amino acid contents of stratum corneum of forearm were higher by 1.5 fold than forehead region. Of note, total amino acid contents were significantly and inversely correlated with trans-epidermal water loss (TEWL), an index for skin barrier function. Especially, Ser, Glu, Gly, Ala and Thr were determined to positively affect skin mositurizing activities. In conclusion, we could demonstrate that amino acid contents of stratum corneum are closely linked with skin barrier and moisturizing function, providing an important and fundamental methodology for the study of amino acids in skin physiology.

• Journal of the Korean Society of Radiology
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• v.10 no.2
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• pp.139-144
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• 2016

The study of radiation-hazard in the human skin tissue is carried out by direct irradiating to experimental animals. The influences of a radiation to the animal's skin tissue are analyzed from this experiment. However, this also accompanies losses in terms of both time and economy. In this study, we simulated human tissue by using a swine skin tissue. The depth of the swine skin tissue for the experiment is determined, and the amount of the direct radiation below this skin depth is analyzed numerically. The amount of the radiation occurred by exposure below the skin tissue can be inferred. Moreover, it is possible to use only cells effectively and animal experiments to analyze the body-hazard by radiation.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.45 no.3
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• pp.225-235
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• 2019

Cymbopogon citratus (CC) and Perilla frutescens (PF) are known to exert various biological effects. However, their skin hydration and skin barrier effects remain unclear. This study investigated effects of their extracts on skin hydration and skin barrier and analysed the phenolic compounds. effects of these extracts on skin hydration in HaCaT cells showed that Hyaluronic acid production in cells treated with ethanol extracts was higher than that treated with water extracts for both CC and PF. HPLC was used to analyse 19 phenolic compounds in CC and PF ethanol extracts (CCE and PFE). Results revealed chlorogenic acid and p-coumaric acid in CCE and rosmarinic acid and caffeic acid in PFE. Expression levels of hyaluronan synthase 1 (HAS1), HAS2, HAS3, and aquaporin 3 (AQP3), which are related to skin moisturization, and filaggrin and loricrin, which are related to skin barrier were higher in cells treated with CCE than with PFE. CCE and PFE also increased expression of PPAR-a protein involved in skin moisturization and epidermal differentiation in a concentration-dependent manner. As major components of CCE, chlorogenic acid and p-coumaric acid increased PPAR-a protein expression. Thus, CCE and PFE could be used as functional cosmetic materials for skin hydration and skin barrier effects.

• Proceedings of the Korea Multimedia Society Conference
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• 2002.11b
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• pp.381-384
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• 2002

본 논문에서는 실험 영상으로부터 학습된 피부색상 정보를 이용하여 컬러 공간테이블을 생성한 후. 입력된 영상의 컬러와 공간정보를 학습된 피부색상 공간테이블로부터 비교, 분석하여 얼굴후보영역을 찾고자 하였다. 또한 추출된 후보영역의 레이블된 특징정보를 이용하여 지역적 특징을 찾아낸 후 얼굴 특징점의 위치에 따른 형태정보를 이용하여 신뢰할 수 있는 얼굴 영역을 검출하고자 하였다. 제안된 피부색상(Skin-tone)공간테이블은 변환하기 쉽고 계산이 빠른 RGB컬러 공간에서 실험, 평가되었으며, 실시간으로 입력된 영상의 정규화된 책상 값을 유사성 정도에 따라 레이블링하여 보다 빠른 얼굴 후보 영역의 검출과 검증을 할 수 있도록 하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.12
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• pp.5805-5810
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• 2011

This study aims to provide fundamental data to develop anti-aging programs in the aspect of skin care. To attain the goal, manual therapy and low-power laser therapy were conducted separately to 8 women inthe 40's and 50's. They received the facial massage total 8 times twice a week for 4 weeks. According to the result of calculating the average and standard deviation by measuring skin elasticity of the area below their eyes and cheeks and also melanin around eyes and cheeks and conducting comparative analysis, both groups showed significant increase in elasticity and their melanin decreased significantly. The low-power laser therapy showed higher values than the manual therapy both in elasticity increase and melanin reduction; thus, it was analyzed that the low-power laser therapy more highly affects skin elasticity and the amount of melanin in facial skin is greater than that in manual therapy. Therefore, it was analyzed that skin care using low level laser can be significant in anti-aging of facial skin and can be utilized as a program for a new type of skin care.

• The Journal of the Korea Contents Association
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• v.22 no.5
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• pp.667-684
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• 2022

This study analyzed the problems of skin beauty textbooks used in high school based on the NCS ability unit, and was to improve them. By the NCS standard, it focuses on the contents which can be learned during the high school course. The main results are as follows. First, the revision of textbooks is to contain NCS competency unit, which is excluded in spite of being taught. Second, Replacement is required for NCS 5 level beyond the high school. Third, the illustrated and photographic materials is revised to improve the understanding by maintaining consistency and visibility. Fourth, the contents on the practical skill need specific explanations and instructional materials. Fifth, to revise terminology and the notation system is needed in skin care. The results of this study can be used as basic data to develop an NCS learning module in the skin care field and high school textbooks.

• Journal of Digital Convergence
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• v.14 no.3
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• pp.473-481
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• 2016

This study attempted to solve daily inconveniences and propose a direction for healthy skin care after investigating eating habits, preferred food and shower frequency and analyzing the relationship between these living habits and perceived skin dryness among adult men in their 30-40s who are suffering from pruritus due to dry skin. Most respondents revealed a high level of inconvenience in their daily lives because of dry skin. According to analysis of the correlation between these life habits and skin dryness, they had an effect on skin dryness in most categories of eating habits, preferred food and shower frequency. In particular, as the amount of smoking or preference for sweet food increased, skin dryness became more serious. Therefore, it appears it would be important to control the intake of preferred food and have healthy eating habits in that eating habits and smoking are correlated with skin health, and skin health is an indicator of physical health.