• Journal of Fashion Business
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• v.24 no.6
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• pp.120-134
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• 2020

Recently, the beauty industry has implemented personalized services based on skin big data. To increase competitiveness in the beauty industry, systematic data measurement and evaluation indicators are necessary to select data and obtain necessary knowledge. In response, this study sought to stably enhance the accuracy of skin diagnosis based on satisfaction and reliability. To this end, the research was conducted through focus group interviews (FGI), a case study of brands, and analysis of prior research results. In particular, as a result of analyzing keywords that classify skin types by brand, common survey items for skin types were oiliness and using moisturizer, cosmetic use and vascular of skin, external stimulus and blemish & freckles, facial wrinkle, outside activities, self-consciousness, and smoke. In additioin to the common questions of the preceding study and the brand survey items, the questions concerning complex skin types, seasonal change, facial color, wrinkles and elasticity were added, and the questions were presented in a total of 40 items. In particular, it suggested that skin measurement could be conducted by focusing on elasticity and pigmentation items by reflecting the results of prior research and the opinions of FGI, and based on this, a customized service with high satisfaction and high accuracy of beauty care based on this could be proposed. We hope that this study will facilitate active self-care by providing more satisfying skin stones and personalized cosmetics proposals, thus laying the foundation for the further development of the cosmetics industry.

• The Journal of Korean Medicine
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• v.44 no.2
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• pp.34-44
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• 2023

Objectives: The purpose of this research was to find out the efficacy of Castanea crenata Inner Shell (CCIS) distilled herbal medicine on the skin by comparing the difference effect between only simple distilled water and the CCIS distilled herbal medicine application after MTS (microneedle therapy system) treatment. Methods: The present author performed once a week and total 4 times of MTS treatment. The treatment time took about 5~10 minutes and the depth of the needle was adjusted according to the participant's skin condition. In the control group, simple distilled water was applied after MTS and in the experimental group, CCIS distilled herbal medicine was applied. One week after each treatment, the change of skin condition was measured. Two weeks after the end of the clinical trial, the skin condition was checked again. Results: In the case of the test group, there was a significant decrease in pore size and there was a significant increase in U-zone oil, skin tone and elasticity. The test group using distilled herbal medicine showed a significant effect on facial skin compared to the control group using only simple distilled water. Conclusion: Distilled herbal medicine showed an effective action on facial skin. In the case of CCIS distilled herbal medicine, it was found to have a significant effect on U-zone oil content, skin tone, pores, and skin elasticity.

• KIEAE Journal
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• v.15 no.3
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• pp.43-48
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• 2015

Purpose: Recently, many countries around the world are actively looking for the ways to make full use of natural energy sources and also develop and apply an environmentally friendly system designed to save building energy consumption. Under these circumstances, this study intended to determine the applicability and energy saving effect by deriving the indoor thermal performance characteristics and the PCM temperature appropriate for a double skin façade to reduce indoor energy consumption through the application of different PCM temperatures to double skin façade and perform a performance evaluation depending on the application or non-application of PCM to a double skin façade. Method: For this study, the physical variables of the double skin façade with PCM were configured through a preliminary examination based on an experimental measurement, and experimental measurements were taken with a total of 7 types of mockup cases: Type-1 (Basic), the basic double skin façade, Type-2 (PCM $18^{\circ}C$) which was applied to the inner skin of the double skin façade depending on the phase-change temperature of PCM, Type-3 (PCM $20^{\circ}C$), Type-4 (PCM $22^{\circ}C$), Type-5 (PCM $24^{\circ}C$), Type-6 (PCM $26^{\circ}C$), and Type-7 (PCM $28^{\circ}C$) with reference to the data analysis of the basic double skin façade which preceded this study, to analyze the indoor thermal performance of the double skin façade depending on PCM temperature and the installation or non-installation of a double skin façade applying PCM based on the selected unit space. Result: Indoor thermal performance was analyzed depending on the PCM temperature applicable to double skin façade, and the analysis of heating energy reduction showed that Type-2 (PCM $18^{\circ}C$) gained 15.9% more heat compared with Type-1 (Basic) and secondly, Type-3 (PCM $20^{\circ}C$) gained 11.5% more heat. Based on these findings, it is deemed possible that the use of energy for heating can be reduced when heat coming indoors increases during the heating period, and the appropriate temperature for PCM applied to the inner skin of a double skin façade to reduce heating energy in winter, Type-2 (PCM $18^{\circ}C$) showed the highest efficiency and Type-3 (PCM $20^{\circ}C$) was also deemed appropriate.

• Fashion & Textile Research Journal
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• v.14 no.1
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• pp.130-135
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• 2012

The purpose of this study was to investigate the variation of regional skin temperature with thermography during exercise. Seven men completed 82-min trials which consisted of rest, exercise of $VO_2$ max 60% and recovery period at $30{\pm}0.5^{\circ}C$ and $60{\pm}5%RH$. Changes in skin temperature due to physical activity varied, depending region of the body. The skin temperature of the chest was significantly lowered and that of the back was significantly increased after exercise period(p < 0.05). There were significant negative relationship between the skin temperature of the chest and thermal comfort sensation, and positive relationship between skin temperature of the back and thermal comfort sensation(p < 0.05). It would be better to keep the chest warm, and the back cool during exercise. The skin temperature changed differently on body site due to exercise, and it was influenced by blood flow, sweating and air movement. This study would be meaningful in that the change of regional skin temperature during exercise was investigated consecutively with thermography. In further study, it would be more realistic to measure physiological response with functional sportswear which applies different functional fabric based on skin temperature.

• Korean Journal of Acupuncture
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• v.20 no.3
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• pp.29-34
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• 2003

Objectives : The purpose of this study was to investigate the Effect of Acupuncture Chok-samni(ST36) on Skin temperature(ST), Galvanic skin response(GSR) and Heart rate(HR) in humans. ST36 is used in uneasiness, high fever, stroke, paralysis on oriental medicine. Methods : Subjects were 18 healthy oriental medical students volunteers(15male, 3female, mean age-28). Under sequence of ST36 acupuncture, the first group was observed ST, the second group was observed GSR and the third group was observed HR. Skin temperature was measured on Haegye acupoint(ST41) before and after acupuncture stimulation. Each test took 15minutes. This test was performed twice in order to increase the statistical authenticity. Results : Our result indicates that acupuncture stimulation of ST36 statistically decreased skin temperature on ST41. Also statistically decreased in HR. The change of GSR after ST36 acupuncture was decreased, but there is no statistical. Conclusions : These results suggested that acupuncture stimulation of ST 36 has effect on ST and HR in human body, and may be used by treatment as control the nerve system.

• Journal of Pharmaceutical Investigation
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• v.38 no.2
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• pp.87-92
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• 2008

Wood vinegar is well known as a softening agent affecting on the stratum corneum that is easy to penetrate into the skin. In this study, we prepared mixed ursolic acid hydrogel with wood vinegar(1, 2, 5%) as a penetration enhancer. The accumulation of ursolic acid in the skin from hydrogels was evaluated in vitro hairless mouse skin and skin moisturizing effect of them was evaluated using the corneometer and the tewermeter. And the role of stratum corneum as a protective barrier was evaluated as well. The hydrogels were retained about 40% of water retention capacity 2hrs and had better effect on the stripped skin than full-thickness skin. The accumulation of ursolic acid through stripped skin from hydrogels with wood vinegar was not change compared to normal skin, which indicated the action site of wood vinegar and the accumulation site of ursolic acid would be stratum corneum. From these result, we could find wood vinegar seems to be a good enhancer for active materials with anti-wrinkle and anti aging effect such as ursolic acid, and can be a developed topical delivery system maintaining excellent water retention capacity.

• The Korea Journal of Herbology
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• v.36 no.4
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• pp.31-39
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• 2021

Objectives : The purpose of this study was to find out the efficacy of ginseng on the skin by comparing the difference effect between only MTS (microneedle therapy system) and the ginseng solution application after MTS treatment. Methods : The present author performed once a week and total 3 times of MTS treatment. The treatment time took about 5~10 minutes and the depth of the needle was adjusted according to the participant's skin condition. In the control group, skin toner was applied after MTS and in the experimental group, ginseng extract dissolved toner was applied. One week after each treatment, the change of skin condition was measured. Two weeks after the end of the clinical trial, the skin condition was checked again. Results : In the case of t-zone oil, there was a significant decrease in the test group and in the case of pores and pigmentation, there was a significant decrease in both the test group and the control group, but the degree of significance was greater in the test group. In the case of skin tone, there was an increase, but no significance. Conclusion : The MTS treatment itself showed good effects on t-zone oil, pores, pigmentation, and skin tone. But the effect was much better when the ginseng extract solution was applied to the skin after MTS treatment. This study suggests that ginseng solution increases the efficacy of MTS.

• Clinical Pain
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• v.15 no.2
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• pp.92-96
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• 2016

Objective: High frequency wave has been used in cancer treatment and cosmetic area but not in musculoskeletal pain yet. The purpose of this study is to evaluate temperature distribution according to depth and confirm safety of high frequency wave through animal study. Method: High frequency wave was applied to the posterior limb of 9 Sprague-Dawley rats for 20 minutes (experimental group) and no wave was used in the same number of rats for control group. Tissue temperature was measured from skin surface to 1 cm depth (surface, 1 mm, 5 mm, and 1 cm) for 5 seconds. Results: In the experimental group, temperature was elevated 3.2℃ at skin surface, 2.87℃ at 1 mm, 2.25℃ in 5 mm, and 1.74℃ in 1 cm depth. These were significantly different from those in the control group (p<0.001). There was no bulla or redness in the skin after high frequency wave stimulation and neither change of myocytes nor collagen degeneration was found in the tissue histology. There was no apoptosis in the skin surface and muscle layer in TUNEL assay. Conclusion: High frequency wave elevated tissue temperature from the skin to muscle layer without both histologic change and apoptosis.

• Journal of the Korean Institute of Oriental Medical Informatics
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• v.14 no.2
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• pp.73-79
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• 2008

Objectives : We investigated the correlation of the skin color to blood circulation on the face of Korean female by noninvasive-skin measuring devices. Methods : Korean female(37.47${\pm}$3.66 years, n=36) aged 30-45 years were participated in this study. We measured the skin color of the face with Spectrophotometer CM2600d (Minolta, Japan) and the skin blood flow with Laser Doppler Imaging-Periscan PIM II (Perimed AB, Sweden). The skin color and blood circulation of three groups (30-35 years, 36-40 years, 41-45 years) divided on age were analyzed by paired-t test and regression analysis. Results : The L* values of the skin were decreased and the a* values were increased significantly with age. This means that the more age increase, the more the skin is dark and red. But the skin blood flow was not significantly different with age and skin color. Conclusions : In the oriental medicine, It was reported that the face of the female over 35 years is changed gradually haggard and the blood circulation is decreased. In our study, the blood circulation was not changed and the skin color was dark and red with increasing the age. We think this symptom resulted from the better nutrition than the past, the change of the blood-quality and this changes were too sensitive to be measured by Laser Doppler Imaging system.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.44 no.4
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• pp.455-463
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• 2018

Skin elasticity has been known to be influenced by the change of dermal components such as collagen, elastic fiber, and glycosaminoglycans. However, it is unclear whether the uppermost epidermis may affect the mechanical characteristics of elasticity. In present study we tried to find the role of stratum corneum when determining the elastic property under skin bioengineering measurement with $Cutometer^{(R)}$. A total of 10 healthy volunteers aged 25-40 years were investigated by the parameters reflecting the skin elasticity from face and volar forearm. Within various ranges of suction pressure, R0 (=Uf), R7 (=Ur/Uf) and R8 (=Ua) were obtained to explore the depth-associated elasticity. In addition, these parameters were re-measured after the skin was fully hydrated. As results, we found that the measurement of depth-associated elasticity was possible as using various suction pressure. And the R7 parameter was significantly lower from face than those from forearm in before hydration (p < 0.05). Also, we found that the hydration of stratum corneum could affect skin elasticity. Especially, the R7 parameter at 300 mbar suction pressure of face skin showed significantly increased values than that of before hydration (p < 0.05). Interestingly, measured data from the face before and after hydration manifested relatively higher variation than from the forearm. These results suggest that it is possible to evaluate the skin elasticity considering the changes of stratum corneum and epidermis by using various suction pressure and skin hydration.