• Journal of the Society of Cosmetic Scientists of Korea
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• v.28 no.3
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• pp.63-90
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• 2002

Quantitative measurement of melanin is the best method to evaluate whitening effect of cosmetics on human skin. However, non-invasive method to quantify human skin melanin with high precision has not been established. Whitening effect of cosmetics on the skin results in lightening of skin color. Therefore, it is reasonable to measure skin color in a reproducible manner for the assessment of whitening effect. Several Instruments or methods, such as colorimeter, mexameter, and visual assessments by experts , have been used for this purpose. In this lecture I will review the details of various assessment methods for the evaluation of whitening effect and discuss the pros and cons of each method. Then I will present briefly the results of clinical trial. Finally I will introduce new non-invasive modalities to quantify melanocytes.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.33 no.4
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• pp.275-280
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• 2007

In this study, we evaluate anti-oxidation, whitening and anti-inflammatory efficacies of Euphorbia jolkini extract for application as a cosmeceutical ingredient. We separated 5 fractions from Euphorbia jolkini extract (70 % MeOH) by MPLC. First and 5th fractions showed a supressive effect on Mn-SOD synthesis in the normal human fibroblasts. They inhibited melanogensis in the B16-F10 melanma cells. Furthermore, 1st and 5th fractions reduced the amounts of $IL-1{\alpha}$, IL-6, COX-II and total NO secreted from the normal human fibroblasts. These results suggest that Euphorbia jolkini extract may be used as an active ingredient in cosmetics.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.25 no.3
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• pp.79-87
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• 2019

The degree of cosmetic's oxidation depends on the storage conditions and external conditions when using the product. The microbial contamination and oxygen exposure often results in the quality deterioration of cosmetics. In addition, the problem is that consumers often use cream-type cosmetics, which have short expiration period (6-12 months), even after the product is expired. When using the deteriorated cosmetics, it can be fatal to consumers' safety including some symptoms such as folliculitis, rashes, edema, and dermatitis. Therefore, it is necessary to develop sealed smart packaging for cosmetics to prevent the deterioration of cosmetics and improve consumer safety. In this study, we have developed smart packaging design for cosmetics that can measure the surrounding environment and expiration date for the cosmetics in the real time. In addition, the smart packaging includes sensor, which are linked to the mobile application. Users can find out the measurement results through the application. Also, the packaging design and functions were set up based on the survey results by the user and feasible model can be produced based on user choice. The measurement in the three environment has been done after manufactured the sensor, PCB, and mobile application. As a result, it works normally within a certain range under all three environmental conditions. It is believed that the information on expiration dates and storage environment can be efficiently delivered to the consumers through developed cosmetics smart packaging and applications. The development of UI/UX design for consumer is further studied. The UX/UI design of the application plays an essential role in achieving this goal through the commercialization the cosmetic products in the wide range.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.35 no.1
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• pp.11-17
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• 2009

Betamethasone propionate, an anti-inflammatory glucocorticosteroid, was detected in cosmetics with no indication on the label of this compound as an ingredient. The product was formulated as a topical spray or shampoo and labeled to contain zinc pyrithione as the active ingredient. A thin-layer chromatographic analysis was carried out on silica gel plates to provide a first indication about the presence of a compound with steroid structure and reactivity; then high-performance liquid chromatography (HPLC) separation allowed the identification of the corticosteroid agent and its quantification. To identify the corticosteroid agent from these commercial samples we collected the fractions suspected to have ketol steroids by prep HPLC and identified the compound as betamethasone propionate by NMR and MS spectrometry. Then we synthesized the standard for the betamethasone 17-propionate and 21-propionate and quantitate the corticosteroids from the sample by HPLC with that standards. By this method we identified the corticosteroid compounds from some commercial cosmetics such as zinc pyrithione sprays. The finding of betamethasone propionate in the products was shown by comparison to an authenticated standard of betamethasone propionate by retention time on reverse-phase HPLC. Two of the tested products contained betamethasone propionate at the levels of 0.005 ${\sim}$ 0.02% and the others were free of betamethasone propionate.

• Journal of Convergence for Information Technology
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• v.11 no.1
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• pp.261-267
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• 2021

This study aims to explore the effect of beauty lifestyle behaviors on the pursuit of beauty values and cosmetics purchasing behaviors in female college students, identify consumption market of female college students in beauty industry and contribute to the advancement of beauty industry. Data were collected by conducting a survey in 328 students. The survey was performed using self-administered questionnaires answered by the respondents themselves. The survey items were rated on a 5-point Likert scale and multiple choice question type was used. Statistical analyses were done using SPSS Statistics ver. 22.0. The study results are as follows. First, the regression analysis on the effect of beauty lifestyle behaviors on the pursuit of beauty values were found to be impacted on the sub-variables of beauty lifestyle behaviors including manicure, make-up, diet, body-shaping, and shopping behaviors (p<0.01). Second, the results of a difference in the pursuit of beauty values by cosmetics purchasing behavior showed that purchase frequency of cosmetic products for buying cosmetics were found to be statistically significant Third, as the results of a difference in cosmetics purchasing behaviors by beauty lifestyle behavior, reasons for the purchase frequency of cosmetic products, cost of purchasing cosmetics were statistically significant.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.21 no.1
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• pp.38-52
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• 1995

The liposomes have been developed in many drugs and cosmetics fields. In this context, it should be mentioned that MLV liposomes can be prepared standing with the main compounds of the intercellular lipids, cholesterol, palmitic acid, cholesteryl ester and lecithin, by swelling reaction. We report properties of the formation of MLV liposomes with use of the lipid base and Microfluidizer. MLV liposomes formed as multilamellar vesicles(MLV). The effect of the gelation of MLV liposomes have been on swelling reaction which have been mixed lipid with polyol and water phase at high temperature(90$\pm$5$^{\circ}C$). MLV liposomes have been prepared in incorporating alpha hydroxy acid ligrediens. Optimum condition of MLV liposomes were passed three times in the microfluidizer, particle size of the vesicles should be within 150-350nm and those confirmed by freeze-fracture electron microscopy.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.26 no.1
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• pp.125-138
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• 2000

화장품의 개발에서 기계적인 측정결과 뿐만 아니라 소비자가 실제 사용할 때 느껴지는 감성적인 요인의 중요성이 높이 인식되어감에 따라, 관능적인 특성평가의 필요성이 대두되고 있다. 그런 관점에서 트원케익에 대한 사용성 테스트의 한 방법으로 기호형 관능평가를 시도하였고, 본 실험에서는 동일한 소비자(28 명)가 9개의 트윈케익을 일정한 시간에 비슷한 화장 조건하에서 사용하여 비교 평가하도록 하여, 평가의 재현성과 신뢰성을 꾀하였다. 평가는 트윈케익의 세부 관능적 특성에 대한 강도 조사와 선호도 조사 및 전체적인 만족도에 대한 것이었다. 수집된 테이터를 주성분분석에 의해 데이터를 분석하였고, 그 결과 크게 커버력 요인과 입자감 요인이라는 2 가지 요인으로 트원케익의 특성을 평가할 수 있음을 알았다. 일반적인 트윈케익의 분류 방법인 촉촉함과 매트함의 경우, 매트함에 있어서는 트원케익의 공통적 속성으로 제품간 차이를 느끼지 못하였고, 촉촉함에 있어서는 트원케익제품간 차이를 약간 느끼는 것으로 나타났다. 또한 트윈케익의 관능적 특성별 강도와 선호도의 상관관계를 분석하였고, 그 결과에 따른 트윈케익의 (+)매력품질과 (-)매력품질을 분석하였는데, 선호도가 높은 제품이 되려면 여러 가지 (+)매력품질을 고루 갖추고,(-)매력품질을 적게 가져야 할 것으로 사료된다. 본 실험의 평가자들이 대부분 25∼30 세인 점을 감안하면 이 연령 대에서 선호도가 높은 트윈케익 제품의 특성은 커버력이 있으면서 고운 입자감을 느낄 수 있으며, 너무 촉촉하지도 매트하지도 않은 중간 상태와 자연스러운 화장상태를 유지하는 것으로 나타났다.

• Journal of the Korea Society of Computer and Information
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• v.27 no.8
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• pp.241-251
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• 2022

Diagnosis and management of customer's skin condition is an important essential function in the cosmetics and beauty industry. As the social media environment spreads and generalizes to all fields of society, the interaction of questions and answers to various and delicate concerns and requirements regarding the diagnosis and management of skin conditions is being actively dealt with in the social media community. However, since social media information is very diverse and atypical big data, an intelligent skin condition diagnosis system that combines appropriate skin condition information analysis and artificial intelligence technology is necessary. In this paper, we developed the skin condition diagnosis system SCDIS to intelligently diagnose and manage the skin condition of customers by processing the text analysis information of social media into learning data. In SCDIS, an artificial neural network model, AnnTFIDF, that automatically diagnoses skin condition types using artificial neural network technology, a deep learning machine learning method, was built up and used. The performance of the artificial neural network model AnnTFIDF was analyzed using test sample data, and the accuracy of the skin condition type diagnosis prediction value showed a high performance of about 95%. Through the experimental and performance analysis results of this paper, SCDIS can be evaluated as an intelligent tool that can be used efficiently in the skin condition analysis and diagnosis management process in the cosmetic and beauty industry. And this study can be used as a basic research to solve the new technology trend, customized cosmetics manufacturing and consumer-oriented beauty industry technology demand.

• Journal of the Korean Applied Science and Technology
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• v.33 no.2
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• pp.311-323
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• 2016

By studying bioactivity in the aspect of skin care via curcumin, the main component of turmeric, and isoflavones, the soybean extract, this research tried to prove the possibilities as cosmetic ingredients. This research identified the curcumin and soybean extract's anti-inflammatory and toxic effects on skin cells through cell experiment, and using HPLC, the moisture, oiliness, and changes in erythema were measured when the soybean extract was applied to the skin. The result showed that curcumin had the least toxin on RAW 264.7 cell and the anti-inflammatory effect was identified. There were statistically significant changes on the moisture, oiliness and erythema when cosmetics containing curcumin and soybean extract were used. Therefore, it showed the possibilities of the utilization of curcumin and soybean extract to be used as cosmetics for acne skin.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.32 no.1 s.55
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• pp.23-28
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• 2006

In this study, we performed anti-oxidation, whitening, cell recovery and anti-inflammation effects with Alisma orientale to evaluate the cosmeceutical properties. Alisma orientate extract (30, 70, 100 % MeOH) exhibited a significant tree radical scavenging effect against 1,1-diphenyl-2-picryl hydrazine (DPPH) radical generation and showed tyrosinase inhibition effect in a dose dependent manner (over 0.5% concentration). In cell proliferation assay using human fibroblast, it didn't show any proliferation effect but showed safety from cytotoxicity under 0.05% concentration. For whitening assay, we evaluated the melanin synthesis rate using B16 melanocyte and it showed a significant inhibitory effect (up to 40% under 0.05% concentration). After major screening assay, we separate 3 fractions from Alisma orientate extract by MPLC and performed cell recovery assay, melanin synthesis inhibition assay and anti-inflammatory assay. The third fraction showed a cell recovery effect over 30% against radical damage and remarkable repression in melanin synthesis and COX-2 synthesis.