• Polymer(Korea)
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• v.32 no.5
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• pp.421-426
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• 2008

pH-responsive P(MAA-co-EGMA) hydrogel microparticles were synthesized via dispersion photo polymerization and the feasibility of the particles as the cosmetic formulation was investigated. Rh-B and the functional materials for the cosmetic application such as ascorbic acid, adenosine, EGCG, and arbutin were loaded in the P (MAA-co-EGMA) hydrogel microparticles in order to examine the interaction between the hydrogel and the loaded materials. In the loading experiments, Rh-B showed the highest loading efficiency to the P(MAA-co-EGMA) hydrogels due to the electrostatic attraction between the negative charge of the hydrogels and the positive charge of Rh-B at the ionized states. However, the functional materials showed relatively low loading efficiencies because of the electrostatic repulsions between the negative charges of both the hydrogels and the materials at the ionized states. In addition, P(MAA-co-EGMA) hydrogel microparticles showed pH-responsive release behavior of Rh-B according to the external pH changes.

• Proceedings of the SCSK Conference
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• 2004.09a
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• pp.1-8
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• 2004

고령화사회(aging society)에서 매우 빠른 속도로 고령사회(aged society)에 다가가고 있는 우리나라는 노인에 대한 개념을 새롭게 재정비하고 장수고령사회에 대비한 새로운 문화를 창출하여야 할 때이다. 노화란 개념에 대해서도 불가피하고 비가역적인 생체의 변화를 통한 죽음에 이르는 도정이라는 결정론적 시각을 불식하고, 노화현상은 생명체의 생존을 위한 적응적 반응성 변화라는 사실을 분명하게 하고, 그러한 변화의 요인이 제어가 가능한 생체의 변화임을 인식하여 노화 및 노인 문제에 대하여 새롭게 대처하여야 할 필요가 대두되고 있다. 아울러 노화현상에 대한 새로운 가설인 노화대문설(Gate theory of aging)의 기본을 설명하고 이를 바탕으로 한 기능적 장수(functional longevity)의 개념을 정리해본다.

• Microbiology and Biotechnology Letters
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• v.37 no.4
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• pp.399-404
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• 2009

This paper described the formulation of functional cosmetics and evaluation of anti-wrinkle efficacy in clinical test. Cosmetics were formulated with highly purified $\beta$-carotene obtained from the culture broth of recombinant E.coli cells. Edible oil for solubilizing $\beta$-carotene, vitamine E for long-term storage, detergent/stabilizer (2.0%) for the complete formation of oil/water emulsion, dimethicone (0.35%) for good skin care, and sorbitol for skin moisturizer were also added as ingredients. Physical or chemical degradation of formulated products stored at $0^{\circ}C$, $25^{\circ}C$, or $40^{\circ}C$ was not observed for 60-day testing period. In clinical test, 68% of applicants observed wrinkle decrease after 8-week treatment. This result indicates that newly formulated cosmetics have strong potential for improving wrinkle skin care.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.05a
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• pp.372-374
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• 2020

최근 화장품이나 뷰티산업의 성장이 가속화되고 있다. 이에 따라 시장에 다양한 뷰티제품들이 출시되고 있지만 그로 인해 오히려 본인에게 적합한 제품이 무엇인지 알지 못하는 경우가 많다. 온라인을 통해 구매하는 경우 구매후기 및 광고에 의지해야 하며 전문가의 조언을 구하기 위해서는 오프라인 상점을 방문할 수밖에 없다. 그러나 오프라인 상점을 방문한 경우에도 자신에게 적합한 화장품을 추천받는 것 또한 다분하지 않다. 본 논문에서는 이러한 문제점을 해결하고자 온라인 환경에서 소비자에게 맞는 상품의 광고 및 정보를 받을 수 있는 화장품 추천 서비스를 제안한다. 또한 제안서비스는 AI기능을 적용하여 기존의 방식보다 소비자 친화적인 서바스를 제공하는 것을 목표로 한다.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2011.10a
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• pp.6-7
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• 2011

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2002.04a
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• pp.54-54
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• 2002

• Proceedings of the Korean Nutrition Society Conference
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• 2003.05a
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• pp.298.2-298.2
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• 2003

• Proceedings of the Korean Nutrition Society Conference
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• 2003.05a
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• pp.298.1-298.1
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• 2003

• The Inventors News
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• no.19
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• pp.2-2
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• 2004

세월 감추는 `주름개선 화장품` 특허 출원 증가 - 기분 좋게 하는 쾌적 기능성 섬유 수출, 높은 신장율 나타내 - 김치 상품화 위한 특허 출원 급격히 증가 - 야구용품 특허 1호 `아카시아 방망이` - 언제, 어디서나 온라인게임 즐겨요!

• Journal of the Society of Cosmetic Scientists of Korea
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• v.45 no.4
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• pp.399-408
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• 2019

Arbutin, which is used as a whitening ingredient, can produce hydroquinone, known as causing skin disease and carcinogen. Preservatives are essential to prevent microbial contamination during long-term storage and use of cosmetics, but safety issues such as toxicity and skin irritation are being raised. This study was conducted to determine hydroquinone and 21 preservatives levels in 40 arbutin-containing whitening functional cosmetics sold on-line and off-line. Result showed that 9 products contained hydroquinone. The concentrations in 7 products were ranged from 0.3 to 0.9 ppm, which were within the maximum allowed amount established by the Ministry of Food and Drug Safety. However, 2 products were 8.4 and 50.5 ppm and exceeded the allowed amount. Preservatives were detected 20 products. Detected items and ranges were phenoxy ethanol 0.1 ~ 0.7% (N = 15), Methyl paraben 0.19 ~ 0.21% (N = 2), Chlorphenesin 0.13% (N = 1), chlorhexidine 0.006% (N = 1), Propyl paraben 0.06% (N = 1), which were within maximum allowed amount established by the Ministry of Food and Drug Safety. Also, in cases of functional cosmetics the phrase "functional cosmetics" should be expressed on the primary or secondary package of cosmetics by cosmetics act. However, 1 product did not state the phrase as functional cosmetics. This study suggest that preservatives were safely managed. However, hydroquinone in hydroquinone-detected products could be produced by the decomposition of arbutin. Thus, further studies on the decomposition of arbutin are required to improve the quality control of the cosmetics.