• 한국응용과학기술학회지
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• 제19권3호
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• pp.167-173
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• 2002

The isoflavone as a derivatives of flavone is colorless crystalline compounds. It acts on synthesis of fibronectine, collagen III, collagen I in human normal fibroblast by same biological activity to animal hormone. In this study, we tried to search and demonstrate system content rate of dermal translocation system for cosmetics using microemulsion containing isoflavone. The results of microemulsion stability test by centrifugation, storage in incubator and circulation chamber showed that separation of phase did not appear after 30 days. By the skin flexibility test, it has confirmed efficiency and effect as cosmetics materials. As the result, the microemulsion showed that skin flexibility factor improved up to 7.6%. We could confirm that O/W type microemulsion was stable system.

• 한국보건간호학회지
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• 제14권2호
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• pp.271-280
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• 2000

The purpose of this study was to identify the health status of elderly. Subjects were 132 older people who live in home and institution located Taejon metropolitan city. Data were collected from May 1997 to April 1998. To obtain data about health status of elderly. pulse, respiration, systolic and diastolic blood pressure. grip strength. pinch pressure. flexibility, arm circumference. triceps skin fold thickness were measured. Data were analyzed for frequency. percentage. t-test using SPSS pc+ program. The results were as follows: 1. $74.4\%$ of subjects was perceived as 'good' in their health status. 2. Mean pulse, mean respiration, systolic and diastolic blood pressure were with in normal limits. There were no statistical differences between men and women in pulse, respiration, systolic and diastolic pressure. 3. Left and right grip strength were 24.89 psi and 25.23psi. The grip strength in men was higher than that of women. It showed statistically difference between men and women in grip strength. 4. Left and right pinch pressure were 7 pound and 7.32 pound. There was statistically difference of pinch pressure between men and women. 5. left flexibility was better than right flexibility of subjects. There was no statistically significant difference between men and women in flexibility. 6. Arm circumference was 24.96cm and there was no statistically significant difference between men and women. 7. Mean skin fold thickness was 12.83 em. Skin fold thickness in men was lower than that of women. It showed statistically difference between men and women. From these results, further study should be considered gender differences in health status of elders and carried in larger sample than this study.

• Toxicological Research
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• 제17권2호
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• pp.91-96
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• 2001

Phthalates are widely used as plasticizers to impart softness and flexibility to normally rigid polyvinylchloride products. However, there are not much studies jar dermal and ocular irritation toxicity of phthalates. So we investigated the skin or eye irritation effect of some phthalates which was not reported. The primary skin irritation of diethyl phthalate (DEP), diisodecyl phthalate (DIDP), diisononyl phthalate (DINP), dipropyl phthalate (DPP) and dipropyl phthalate (DPrP) was studied. The ocular irritation of dibutyl phthalate(DBP), DIDP, DINP, DPP and DPrP was also studied. DEP, DIDP, DINP, DPP, and DPrP were found to be non-irritating to the skin of the test animals. DBP, DIDP, DINP and DPP were found to be non-irritating to the eye of the rabbits. DPrP caused the slight irritations to the eye in 1 or 2 days after treatment but irritation of the animals was soon recovered.

• 대한화장품학회지
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• 제41권2호
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• pp.113-119
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• 2015

피부의 최외곽층인 각질층에 대한 수분량을 측정하는 것은 피부장벽기능과 생물리학적 특성에 대한 피부 건강함, 유연함, 부드러움 등의 중요한 정보를 제공한다. 그러나, 평가자와 피험자와의 개인적인 차이와 측정환경의 변화에 따라 재현성과 반복성에 있어서 각질층의 수분량을 측정하는 데에는 많은 어려움이 있다. 본 연구의 목적은 피부 각질층에 여러 종류의 제품을 사용 전후에 객관적으로 수분량을 측정하는 데에 있다. 40명의 건강한 자발적 피험자의 하박 내측을 피부의 전기용량 특성을 이용하여 수화정도를 측정하였다. 피부 수분량은 시험제품 도포 후, 3 h, 6 h 뒤에 측정하였다. 무도포 부위의 편차를 보정하기 위해 수분증가율을 이용하였고, 5반복 측정을 통하여 분석하였다. 수분량 측정에 가장 효과를 보이는 대표적 폴리올 종류인 글리세롤과 부틸렌 글라이콜을 이용하여 연구를 수행하였다. 대부분의 폴리올 종류는 피부 수분량 변화에 영향을 미치기 때문에 연구에 참여한 피험자에게 0 ~ 20%의 글리세롤을 표준제품으로 사용하여 보정하였다. 피부 수분량은 낮은 농도의 글리세롤 범위에서 직선의 상관관계를 갖기 때문에, 글리세롤의 농도에 따라 피부 수분량에 대한 피험자 각각의 표준화된 곡선을 얻었다. 이렇게 얻어진 피부 수분량에 대응하는 글리세롤 농도 값은 통계학적으로 재현성과 반복성을 보였다. 게다가 이렇게 얻어진 표준화 곡선은 피험자 개인의 피부특성으로 활용할 수 있었다. 이러한 연구 결과는 화장품과 같은 피부외용제품에 대한 미세한 피부 상태의 변화와 외부환경 변화에도 불구하고, 같은 결과를 보였다. 향후 이러한 결과를 토대로, 계면활성제와 지질, 수용성 물질에 대한 제품 원료에 대한 피부 측정에 필요한 비침습적 방법과 병행해서 사용할 수 있을 것으로 사료된다.

• 한국의류학회지
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• 제42권1호
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• pp.121-132
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• 2018

Recent beauty trends focus on suitability to individual features. A personal color system is a recent aesthetic concept that influences color make up and coordination. However, a personal color concept has several weaknesses. For example, type classification is qualitative and not quantitative because its measuring system is a sensory test with no industry standard of personal color system. A quantitative personal color type classification model is the purpose of this study, which can be a solution to above problems. This model is a kind of mapping system in a 3D Cartesian coordinate system which has own axes, Value, Saturation, and Yellowness. The cheek color of the individual sample is also independent variable and personal color type is a dependent variable. In order to construct the model, this study conducted a colorimetric survey on a 993 sampling frequency of Korean women in their 20s and 30s. The significance of this study is as follows. First, through this study, personal color system is established on quantitative color space; in addition, the model has flexibility and scalability because it consisted of independent axis that allows for the inclusion of any other critical variable in the form of variable axis.