• Journal of the Korean Applied Science and Technology
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• v.36 no.1
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• pp.73-83
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• 2019

The purpose of this study was to compare and analyze the differences and satisfaction of each purchase behavior by classifying cosmeceutical and medical cosmetics. A total of 861 questionnaires were distributed to males in their 20s to 50s (from 1 march 2017). A total of 446 respondents with experience using cosmeceutical cosmetics and medical cosmetics used as the final analysis material. According to the study, the term recognition for cosmeceutical cosmetics and medical cosmetics was very low. The differences in each purchase behavior were not statistically significant. but cosmeceutical cosmetic products have been found to have a significant impact on quality, price, container design, and service satisfaction among purchase preference factors (p<0.05, p<0.01, p<0.001), In particular, it was found that satisfaction with quality was the greatest. Medical cosmetics have been found to have a significant positive (+) effect on brand image, price, and container design among purchase preference factors (p<0.01, p<0.001), It was also found to have the biggest satisfaction with the brand image. Based on the results of this study, The features of cosmeceutical cosmetics and medical cosmetics are subdivided. It has been deemed necessary to develop differentiated products according to each purchase behavior and preference.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.45 no.4
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• pp.409-414
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• 2019

Silica and polymethylsilsesquioxane (PMSQ) are silicone powders widely used as cosmetics. We synthesized silica-PMSQ composites via sol-gel method using tetraethoxysilane (TEOS) and methyltrimethoxysilane (MTMS) as precursors of silica and PMSQ, respectively. Shape of the composites was controlled by varying the ratios of TEOS and MTMS, which were used as silane monomers. Silica-PMSQ composites showed three different shapes, which were sphere-shape, raspberry- shape, and donut- shape. All of them had soft touch, easy water dispersion, and soft focus effect in common. However, each shape showed some differences in sense of use, adhesion, and strength of the soft focus effect. Raspberry-shape composite had the strongest soft focus effect, donut-shape one had the strongest adhesion, and sphere-shape one had the best in softness. Thus, it is concluded that by varying the ratios of TEOS and MTMS silica-PMSQ composites could be easily synthesized into different shapes, providing various functions. This method can be applied to manufacture functional cosmetics.

• Journal of the Korean Applied Science and Technology
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• v.30 no.4
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• pp.664-671
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• 2013

Determination of xanthan gum as watersoluble-polymer in commercial cosmetic samples was carried out by High Perfomance Liquid Chromatography(HPLC). An $C_{18}$ reversed-phase column and the selected ELSD detector was applied. The 25mM ammonium acetate/acetonitrile was used for the mobile phase of gradient conditions. The analysis results of HPLC showed good linearity with correlation coefficient of $r^2=0.9993$ in the rage of $50.3{\sim}604.1{\mu}g/ml$ and detection limit of $12.0{\mu}g/ml$.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.28 no.1
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• pp.116-134
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• 2002

세리신은 누에고치의 고치실에서 추출되는 천연 단백질로서 많은 수산화기를 가지고 있어 뛰어난 보습성을 가진다. 이에 화장품에의 응용이 기대되나, 물에 잘 녹지 않는 특성을 가지고 있어서 화장품 원료로 사용하기에 어렵다는 단점이 있다. 본 연구에서는 친양쪽성 화합물인 poly(ethylene glycol)(PEG)을 세리신에 도입하여 수용성이며 자기조합형(self-assembled) 세리신-PEG 결합체를 합성하였다. 세리신내의 tyrosine 잔기의 방향 족 수산화기가 반응사이트임을 $^1$H-NMR 분석으로 알 수 있었으며, IR과 CD 측정으로 PEG 사슬의 도입으로 세리신의 구조가 불규칙한 coil구조에서 $\beta$-sheet구조로 구조적 변화가 일어남을 알 수 있었다. 또한 DSC 분석에서 세리신-PEG결합이후 각각의 녹는점이 떨어지는 것을 확인하여 상호 결정성에 영향을 주는 것을 확인하였다. 세리신-PEG 결합체는 자기조합하여 소수성 상호작용을 통해 200-400nm의 구형 나노입자를 이루며 투석방법을 통하여 얻을 수 있었다. 또한, 세리신-PEG 나노입자는 세리신자체보다 더 높은 보습력을 가지는 것을 확인하였다. 세리신-PEG 결합체의 cytotoxicity는 MTT assay에 의해 독성이 없음을 확인하였으며, 동물실험에 의한 독성도 전혀 나타내지 않음을 알 수있었다. 나노입자의 특성과 세리신의 보습성, 세리신-PEG의 친양쪽성 특성으로 세리신-PEG결합체 나노입자는 그 자체로도 원료로 사용 될 수 있을 뿐 아니라 생리 활성성분의 운반체로의 개발이 기대되어 진다.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.28 no.1
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• pp.186-201
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• 2002

Fructan(Levan)은 식물체 및 미생물에서 발견되는 탄수화물로 이는 과당(fructose)이 $\beta$-2, 6 결합으로 연결되어 있는 polysaccaride 이다. 본 연구에서는 Fructan을 생성하는 미생물(Zymomonas mobilis)과 10% sucrose(기질), 1-2% 효모 추출물을 주성분으로 하는 배지를 사용하여 30-37$^{\circ}C$, pH 5.0-7.0에서 20-24시간 동안 배양한후 원심분리하여 균체를 제거하고 3배량의 알코올을 가하여 침전, 건조하여 얻은 Fructan의 화장품 원료로서의 가능성을 조사하였다. 보습효과에 있어서는 Hyaluronic acid와 유사하였으며, keratinocyte에 대한 세포증식 효과를 나타내었다. 또한 3-D culture에 의해 구축된 생인공 피부내에 0.05%의 sodium lauryl sulfate (SLS)를 사용하여 피부자극에 의한 초기 염증 반응을 유도한후 0.01mg/m1, 0.05mg/m1의 Fructan을 각각 처리하였을 때, SLS만을 처리한 생인공피부와 비교하여 세포증식효능을 보였고, SLS 자극물질로 유도된 전염증성 조절인자인 interleukin-l$\alpha$(IL-l$\alpha$)의 분비량을 조사 하였을때 0.01mg/ml, 0.05mg/ml의 Fructan을 처리한 생인공피부의 IL-l$\alpha$ 양이 Fructan을 처리하지 않은 것보다 상대적으로 감소하였다. 이러한 결과로 Fructan이 생인공 피부내 피부 세포의 증식효과를 나타낼 뿐만 아니라, 또한 피부자극물질에 의한 염증반응에 대해 자극완화효능이 있음을 알 수 있었다. 섬유아세포 및 동물을 이용한 안전성 시험에서도 독성이 없는 안전한 원료로 평가되었다.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.24 no.1
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• pp.7-24
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• 1998

게 껍질로부터 얻은 키틴을 탈아세틸화하여 키토산을 얻었으며, 얻어진 키토산의 유기용매에 대한 용해성을 향상시키기 위해 알칼리 조건에서 고압반응ㅇ기를 사용하여 프로필렌옥사이드와 반응시켜 치환율 3.5의 히드록시프로필 키토산을 합성하였다. 합성된 히드록시프로필 키토산은 고체상 CP/MAS 13C-NMR, 1H-NMR, FT-IR을 통해 반응이 키토산의 6번 탄소의 수산기와 2번 탄소의 아민기에 주로 일어났음을 알 수 있었다. 또한 X-선 회절분석을 통해 키토산의 결정성이 프로필렌옥사이드와의 반응에 의해 크게 감소하였음을 알 수 있었고, 그 결과 유기 용매에 대한 용해성이 현저히 증가되는 현상을 나타내었다. 한편, 히드록시프로필 키토산을 수상에 녹인 후 W/O 에멀젼상에 서 알칼리 촉매를 사용항 에피클로로히드린과 가교반응을 실시한 결과 내부가 비어있는 중공 마이크로비드를 얻을 수 있었다. 전자현미경을 통한 분석결과 중공 마이크로비드의 껍질의 내부에는 스킨층이 형성되어 있었으며, 외부 표면은 다공성이 높은 비대칭 막으로 되어 있음을 확인할 수 있었다.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.34 no.3
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• pp.209-215
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• 2008

Iodopropynyl butylcarbamate and climbazole as anti-dandruff agents widely used in cosmetics and pharmaceutics were micronized using supercritical fluid. Supercritical carbon dioxide was selected due to relatively low critical temperature and critical pressure. Iodopropynyl butylcarbamate and climbazole were chosen because of their solubility in supercritical carbon dioxide. The rapid expansion of supercritical solution (RESS) experiments involved investigations of the effect of pressure, temperature on particle size and morphology.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.34 no.1
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• pp.51-55
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• 2008

Although phthalates aren't used as an cosmetic ingredient, some cosmetics especially nail lacquer, hair spray, and perfume still have phthalates. This is mainly caused by contamination and carryover during manufacturing process, so analysis of phthalates in those cosmetics has became a very important thing for quality-assurance(Q.A). The main phthalates under debate are diethyl phthalate(DEP), dibutyl phthalate(DBP), and bis(2-ethylhexyl) phthalate (DEHP) in domestic market. Gas chromatography-mass spectrometry(GC-MS) coupled with solvent extraction and concentration has been used for ppm level and sub ppm level analysis of phthalates. It requires much time and cost to use mass spectrometric detector and to prepare the test solution. Moreover analysis of phthalates at low concentrations is difficult because of contamination which results in wrong analytical results. In the present study, we showed a simple method using gas chromatography-flame ionization detector(GC-FID) which has fast analysis time, minimum use of solvent, reduced sample preparation steps for minimizing contamination and quantitative range of $2{\sim}50{\mu}g/g(ppm)$ in products. Consequently, this method will be proper for Q.A analysis in related companies.

• The Journal of the Korea Contents Association
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• v.21 no.2
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• pp.562-571
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• 2021

This study has verified the consumer effectiveness market influence and relationship with cosmetic purchasing behavior through a covariance model. A female consumer in her 20s or older who had purchased eco cosmetics within the last six months and 300 copies were used for final analysis through panels of online professional research institutes from May 17 to May 30, 2020. As a result of the analysis, functional value, social value, and green consumption value were derived from the consumption value of eco cosmetics. Social value and green consumption value have been shown to have significant impact on consumer effectiveness and market influence but functional value relationships have not been identified. In addition, consumer effectiveness and market influence were found to promote eco cosmetics purchase behavior. Through this study we have identified the importance of perceived environmental issues (consumer effectiveness and market influence) in purchasing eco cosmetics and hope that they will be used as useful data for developing eco products and establishing marketing strategies based on understanding of consumers.

• Journal of the Korean Society of Clothing and Textiles
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• v.24 no.4
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• pp.560-570
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• 2000

The purposes of this study were to segment the cosmeceuticals market based on consumer usage behavior and to develop a profile of each segment using appearance-related variables, purchase attributes, purchase behavior and demographics. A total of 518 responses collected from a questionnaire survey to female consumers was analyzed. Cluster analysis on usage behavior of cosmeceutical products identified three groups including: Anti-aging/Whitening/Slimming product users (22% ); Pore-control product users(20%); and Minimum users(57%). MANOVA, ANOVA and Chi-square analysis revealed significant differences among the three groups on 2 appearance-related variables, 3 purchase attribute factors, 4 purchase behaviors, and 2 demographic characteristics. Based on the results, the study developed a profile of each segment and provided marketing implications.