Journal of the Society of Cosmetic Scientists of Korea (대한화장품학회지)

Society of Cosmetic Scientists of Korea (대한화장품학회)
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Increased Water Resistance and Adhesion Force to Skin through the Hybrid of Fatty Acid Ester and Titanium Dioxide

지방산 에스테르와 티타늄다이옥사이드의 복합화를 통한 내수성과 피부 밀착력 개선

  • Ji Yeon Hong (HK Kolmar, UV Tech Innovation Research) ;
  • Chi Je Park (HK Kolmar, UV Tech Innovation Research) ;
  • Yong Woo Kim (HK Kolmar, UV Tech Innovation Research) ;
  • Sang Keun Han (HK Kolmar, UV Tech Innovation Research) ;
  • Sung Bong Kye (Department of Chemical and Material Engineering, The University of Suwon) ;
  • Ho Sik Roh (Department of Chemical and Material Engineering, The University of Suwon) ;
  • Soo Nam Park (Department of Biohealthconvergence, The College of Natural Science, Seoul Woman's University)
  • 홍지연 ((주)한국콜마, 유브이테크이노베이션 연구소) ;
  • 박치제 ((주)한국콜마, 유브이테크이노베이션 연구소) ;
  • 김용우 ((주)한국콜마, 유브이테크이노베이션 연구소) ;
  • 한상근 ((주)한국콜마, 유브이테크이노베이션 연구소) ;
  • 계성봉 (수원대학교 화학공학과) ;
  • 노호식 (수원대학교 화학공학신소재공학부) ;
  • 박수남 (서울여자대학교 자연과학대학 바이오헬스융합학과)
  • Received : 2023.08.08
  • Accepted : 2023.09.27
  • Published : 2023.09.30
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Abstract

This study aims to investigate the enhancement of water resistance and improvement in adhesion to the skin by combining dextrin palmitate and isopropyl titanium triisostearate coating materials with titanium dioxide. Due to the recent increase in consumers who enjoy outdoor activities, the demand for sunscreen with excellent water resistance is increasing. Prior research was conducted with O/W, Pickering, and W/O/W multiple formulations, but there was a limit to water resistance. The purpose of this study is to develop a complex inorganic powder that can improve water resistance and increase adhesion to the skin to solve this problem. First, we combined dextrin palmitate and isopropyl titanium triisostearate coating materials to form a composite with titanium dioxide. The coating of the inorganic powder was confirmed using FE-SEM and FT-IR analysis. The composite exhibited significantly higher in vitro water resistance compared to other formulations. The hydrophobicity of the coated inorganic powder was compared by measuring the contact angles. When the coated inorganic powder was applied to the W/O sunscreen formulation and the non-coated inorganic powder was applied to the W/O sunscreen formulation as a control, the SPF of the sunscreen containing the coated inorganic powder was higher. These results were the same when observed with a UV camera. Finally the adhesion of the coated inorganic powder to the skin was assessed by applying it to a foundation product. In vivo study, it was observed that the product formulated with the coated powder exhibited less smudging compared to the foundation product formulated with the non-coated powder. The developed inorganic powder in this study demonstrated excellent adhesion to the skin, providing a superior sensory experience, as well as enhanced hydrophobicity and remarkable water resistance effects. In the future, the result of this study is expected to help develop various sunscreen products to improve water resistance.

본 연구는 덱스트린팔미테이트와 아이소프로필티타늄트라이아이소스테아레이트 코팅 기재를 티타늄다이이옥사이드에 복합화하여 내수성 향상과 피부와의 밀착력 개선에 관한 것이다. 최근 야외 활동을 즐기는 소비자의 증가로 내수성이 우수한 자외선 차단제에 대한 수요가 늘고 있다. O/W, 피커링, W/O/W 멀티플 제형으로 선행 연구가 진행되었으나, 내수성에 한계가 있었다. 본 연구에서는 이러한 문제를 해결하기 위해 내수성 향상 및 피부와의 밀착력을 높일 수 있는 복합 무기 분체를 개발하는 것이 목적이다. 우선 덱스트린팔미테이트와 아이소프로필티타늄트라이아이소스테아레이트 코팅 기재를 이용하여 티타늄다이옥사이드를 복합화시켰다. 무기 분체의 코팅은 FE-SEM과 FT-IR을 이용하여 확인하였다. 복합체의 in vitro내수성은 월등히 높았다. 코팅된 무기 분체의 소수성은 접촉각을 측정하여 비교하였다. 코팅된 무기 분체를 W/O 선크림 제형에 적용하고 대조군으로 코팅되지 않은 무기 분체를 W/O 선크림 제형에 적용했을 때 코팅된 무기 분체가 들어있는 선크림의 SPF가 더 크게 나타났다. 이러한 결과는 UV 카메라로 관찰했을 때도 같은 결과를 나타냈다. 마지막으로 코팅된 무기 분체의 피부 밀착력은 파운데이션 제품에 적용하여 확인하였다. In vivo연구에서 코팅되지 않은 무기 분체를 사용한 파운데이션 제품보다도 코팅된 무기 분체를 적용한 제품에서 묻어남이 적게 나타났다. 본 연구를 통해 개발된 무기 분체는 피부와의 밀착력이 우수한 사용감과 소수성이 향상된 뛰어난 내수성 효과를 보여주었다. 향후 본 연구는 내수성 향상을 위한 다양한 자외선 차단제 제품 개발에 도움이 될 것으로 기대된다.

Keywords

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