• Proceedings of the SCSK Conference
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• 2003.09b
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• pp.464-478
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• 2003

Free radicals and reactive oxygen species (ROS) caused by UV exposure or other environmental facts play critical roles in cellular damage and aging. The extract of tinged autumnal leaves of maple tree(Acer palmatum) has proven to be a powerful antioxidant. The Acer palmatum extract is very effective on the stabilization of biological membranes( containing unsaturated fatty acid). We studied photoprotective effect of the extract against UVB-induced cytotoxicity in human keratinocytes. The extract improved cell viability comparing to control after UVB irradiation. In the determination test of pro inflammatory cytokines the extract decreased expression of interleukin 1 a and 6, which play an important role in inflammation and skin erythema caused by UV. We also studied property of varying cosmetic formulations on the percutaneous absorption of the extract. After 24 hour in vitro penetration study, the content of the extract was more highly detected in skin residue part. This result showed the extract had relatively high compatibility of skin in our emulsion system. On human skin, after appling the product containing the extract we obtained a good result of antiwrinkle effect by skin visiometer. In conclusion, the Acer palmatum extract is a photoprotective and very effective in stressed and aged skin care. And we can predict the extract mainly affects on the skin cell and tissue in our emulsion system.

• Journal of Korea Entertainment Industry Association
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• v.14 no.7
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• pp.589-597
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• 2020

The purpose of this study was to verify the acne care improvement effects of natural cosmetics with distilled bamboo vinegar contents and develop the materials for acne cosmetics. For the research subjects, 20 teenage boys and girls were selected and based on random number table, 10 subjects were assigned in the control group that used natural cosmetics (foam cleanser, toner, facial pack) and 10 subjects were assigned in the experimental group that used natural cosmetics with distilled bamboo vinegar contents (foam cleanser, toner, facial pack). The natural cosmetics was used for 12 weeks, and Mark-·Vu facial analysis system was used to measure the sebum, pore size, and redness before using the natural cosmetics, 6 weeks after using the natural cosmetics, and 12 weeks after using the natural cosmetics. For the collected data, SPSS v. 21.0 statistics package program was used for the analysis, and the results are as follows. First, it is a safe natural cosmetics based on the results of the patch test to confirm the skin safety of the natural cosmetics. Second, homogeneity was secured based on the results of the test of homogeneity for the sebum, pore size, and redness of the control group and experimental group. Third, in the verification of acne skin improvement effects of natural cosmetics with distilled bamboo vinegar content, the experimental group had higher reduction rate of changes in the sebum, pore size, and redness on the forehead and right cheek compared to the control group. Therefore, it was identified that the natural cosmetics with distilled bamboo liquid content is safe for the skin and effective for reducing the sebum, pore size, and redness for acne skin. For this reason, it is anticipated for distilled bamboo vinegar to be used in the cosmetics industry.

• Toxicological Research
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• v.34 no.4
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• pp.355-361
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• 2018

Methylisothiazolinone (MIT) has been used in combination with methylchloroisothiazolinone (CMIT) for cosmetic products such as shampoo, body lotion, and skin care products. The mixture of CMIT/MIT has been found to cause allergic contact dermatitis and is thus no longer permitted for use as a preservative in leave-on cosmetics. However, MIT itself was approved as a stand-alone preservative at a maximum concentration of 100 ppm as the toxicity was derived from CMIT rather than MIT. However, in many countries, allergic skin irritation caused by MIT remains a social concern. In this study, skin irritation was assessed for the presence of MIT, propylene glycol, and their mixture using a 3D human skin model $EpiDerm^{TM}$. Although non-diluted MIT causes serious skin toxicity, skin irritation was not observed at a concentration of 100 ppm, the maximum permissible level for cosmetics and personal care products according to European regulations. Propylene glycol, the most widely used vehicle for MIT, did not cause skin irritation in the 3D skin model. The results are expected to provide information for regulatory policies and guidelines on the use of biocides in consumer products.

• Journal of Haehwa Medicine
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• v.21 no.2
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• pp.105-112
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• 2013

In oriental medicine, the skin of the face and the body is the mirror of the viscera and bowels. Skin aging is measured according to the elasticity and glossiness of the skin, which is perceived as a matter of fluid-humor within the realms of oriental medicine. Fluid-humor refers to normal body fluid that makes the skin moist and supple and the hair bright and glossy. If the body is lacking fluid-humor, the hair and skin will be dry and coarse. 'The improvement of fluid-humor (nutrition)' is facilitated based on the oriental physiological change theory for middle-aged women. A new study is therefore necessary to develop oriental herbal cosmetics for young women in their 20s. As yet, there has been no study on the effect of herbal cosmetics formulated for middle-aged women and used by young women in their 20s. This study aims to investigate the effect of 'the improvement of fluid-humor' for the skin of young women in their 20s within the theory of oriental medicine. This kind of study is essential for oriental skin care and the development of diverse oriental herbal cosmetics. To determine the effect of oriental herbal cosmetics on young women in their 20s based on the theory of oriental medicine, which says that a shortage of fluid-humor causes skin aging, this study has examined the skin conditions of young women in their 20s and how satisfied they are with oriental herbal cosmetics through an objective equipment-based measurement and subjective questionnaire survey.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.22 no.2
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• pp.141-152
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• 1996

Many eastern females concern themselves about the condition and the color of their skin. The purpose of the present study is to classify the skin trouble and the change of the facial color due to hormonal cycle in female. We examined the actual cricumstances by questionnaires, and made patch tests of methyl nicotinate, representing rubefacient, to estimate the epidermal penetratin rate, and measured the facial color change during the menstrual cycle period to invest the correlation factors between skin trouble due to cosmetics and facial color change. Fifty-two percent of subjects had skin trouble relating to cosmetics. One second of subjects with skin trouble due to cosmetic complained the change of sysptom by menstrual cycle. The changes of systptom were related on premenstrual period. The skin trouble developed mainly on the first trimester of the pregnancy. In patch test of methyl nicotinate, most cases showed decreased threshold of the reaction on minstruation, and other cases showed increased reactivity of the skin of menstruation. In facial color measurements, it proves in the appearance of red spot, darkness, increasing the value and turning the hue to yellowish, Also it demonstrates that premenstruation hue turn red and value level decrease. During the period, facial color turns pale and hue progress to yellow. This fact coincides with the questionnaire. We have quqntified through questionnaire, which demonstrates it has good correlation with done to the subjects among the internal environment factors hormonal cycle influences the facial color change and the skin trouble due to cosmetics. Through this paper the development of an more fragmented make-up and skin care products is required to increase the interest to females, to make true the creation of beauty.

• Human Ecology Research
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• v.55 no.6
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• pp.593-607
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• 2017

Cosmetics market information is important due to advances in information communication technology and the growth of cosmetics market. This study analyzed the relationship between the pre-purchase utilization of information (commercial, neutral, personal and experiential) and the post-purchase satisfaction of skin care cosmetics, categorized as functionality, safety, economic feasibility, information reliability, purchase convenience, condition of purchase place, packaging/design of product and service. This study analyzed reliability, frequency, differences, correlation and regression analysis using SPSS ver. 24.0. The study results are summarized as follows. First, gender was a significant variable in the level of information source utilization. Women used commercial, neutral, and experiential information sources more actively than men. However, women had lower post-purchase satisfaction that could be understood through expectation disconfirmation theory. Women have very high expectations that can lower post-purchase satisfaction. Second, information source utilization can improve post-purchase satisfaction for cosmetics. The consumer post-purchase satisfact the lowest in the commercial information source; however, consumers were satisfied when the commercial informationinformation sourceenon and regre. Third, the consumeried itnformation sourceenon and regression analysis ial, neutral,source and reflected the characteristics of experiential goods. Therefore, companies should provide accurate commercial, personal and experiential information to increase consumervide accurate commercial, per as well as conduct experiential marketing.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.23 no.3
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• pp.75-81
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• 1997

It has been used that fluorinated compounds could be applied to cosmetic products. It is that fluorinated conpounds are hydrophobicity and lipophobicity. These fluorinated compounds are reported to form a highly protective and effective film against most aggressive chemical and physical agents. PerfluropolymethyoisopropylEther has homophobicity and are colorless, odorless, tasteless and non-greasy. In this we made a success to formulate the new type of hand care cream using PFPE. PFPE are suitable thickness and chemical inertness to skin. The reason that we select PFPE for this investigation. We developed the new type hand care cream by adsorption and dispersion of PFPE. There are very stable dispersion and highly moisture diffusion control. And these characteristics were verified by actual consumer test.

• Journal of the Korea Convergence Society
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• v.12 no.8
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• pp.309-315
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• 2021

Pycnogenol extracted from pine bark is a component with great antibacterial activity and antioxidant effect. It is applied as a natural anti-inflammatory agent with various medical effects including anti-inflammatory effects, regulation of blood pressure, regulation of the immune system, and inhibition of cancer cell growth. However, research related to cosmetics is limited. Therefore, in this study, the effect of Pycnogenol on the skin was studied through a clinical approach. Changes in skin condition were observed after using cosmetics with Pycnogenol and without Pycnogenol for 6 weeks for 10 clinicians in each group. We observed the effect of pore reduction, wrinkle reduction around eyes, a decrease of the number and angle of loose pores, and reduction of pigmentation. Therefore, cosmetics containing Pycnogenol have the effect of improving skin problems of aging skin.

• The Korean Journal of Food And Nutrition
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• v.25 no.2
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• pp.308-316
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• 2012

Proper skin care promotes good metabolism and the biological activity of skin, helps maintain the skin in a healthy and beautiful state when combined with nutritional nourishment. Health functional foods are being used for the purpose of enhancing efficient skin care. Health functional foods related to skin care maintain the epidermis, dermal fibroblast layer and subcutaneous tissue that form the skin. Efficient functional foods alleviate the signs of endogenous aging that come with getting older and exogenous aging caused by sunlight. Even though the field of skin care related to health functional foods has received less attention and been the subject of less research compared to functional cosmetics which are developing widely, this area of skin care that maintains and improves the layer of dermal fibroblast through the intake of food, is expected to progress with the commercialization of products in many fields when the related technical research development is galvanized and the related patents are applied for. Research into health functional foods related to skin care in Korea started rather late in comparison to other advanced countries where patents for relevant techniques have been applied for since 1990's together with research conducted on how they might be used for practical purposes. This study used the key words 'skin care, health functional food' to search for Korean patents that have been applied for at the Korean Intellectual Property Office from 1983 to 2011 using the KIPRIS database, in order to help researchers in the related fields by organizing the patented formulas for health functional foods for skin care which have gained attention recently. According to the number of registrations in each industry field, the total number of patents was 1,120 we screened the major patents among them, the field with the largest number was food foodstuff non-alcoholic beverage and preparation or treatment(A23L) with 135, then natural plant medicine & medical supplies and cosmetics(A61K) with 112, microorganisms or enzymes(C12N) with 63, heterocyclic compounds(C07D) with 44, horticulture or cultivation of sea weeds, forestry(A01G) 16 times, listed from the highest to the lowest number of applications. It has been revealed that food, foodstuff, non-alcoholic beverage and preparation or treatment(A23L) was the industry field where the most patents for health functional foods related to skin care were registered.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.12
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• pp.7005-7011
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• 2014

In this study, due to aging, we propose the possible solutions for a variety of skin problems, skin problems of middle-aged women appear. The object of the present invention is to provide the basic data required for use in cosmetic skin care methods and then to find the direction in accordance with the use situation of the subjective skin cosmetics. For this, total 235 the age of 50's women living in Gyeonggi. Found that the correlation between the method by the subjective skin and cosmetics(***p<.001). Found that the correlation between the method of administration and the skin cosmetic and subjective(***p<.001). These results suggest that training and development can be made for a great skin care program to find the exact status of individuals based on a variety of skin problems from the facial skin of middle-aged women.