Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Studies on Transparent Sunscreen of Water-in-Oil Emulsion Type

유중수 타입의 외관이 투명한 자외선 차단 화장료에 관한 연구

  • Kwak, Jae-Hoon (Department of Cosmeceutical Science, Daegu Hanny University) ;
  • Cho, Yong-Hun (Department of Cosmeceutical Science, Daegu Hanny University) ;
  • Byun, Sang-Yo (Cosmetic Science Major, Dept. of Applied Biotechnology, Ajou University) ;
  • Kim, Tae Hoon (Department of Food Science and biotechnology, Daegu University)
  • Received : 2015.08.03
  • Accepted : 2015.09.24
  • Published : 2015.09.30
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Abstract

This study is related to the developing method of a transparent sunscreen cosmetic which has waterproofing property and no white turbidity when applied to skin. The transparent sunscreen is prepared by exploiting refractive index difference between oil-phase and water-phase of water-in-oil(W/O) emulsion. The sunscreen according to this study is prepared as a W/O type emulsion so that it is water-stable and water resistance. Also, the stability of W/O type emulsion is developed by adjusting the content of oil phase part and water phase part. As a result of this studying, the transparent W/O emulsion is prepared by adjusting the refractive index of oil-phase and water-phase within 0.004 and it is found that the stability of the transparent sunscreen is increasing when the water phase part is over 75% (w/w) of the W/O emulsion. Through clinical test of transparent sunscreen, the value of sun protection Factor(SPF) and Protection Factor of UVA(PFA) were determined. SPF and PFA values of transparent sunscreen were indicated $30.99{\pm}1.65$ and $3.01{\pm}0.30$.

본 연구는 내수성을 지니고 사용 시 백탁 현상이 없는 투명한 외관을 가지는 자외선 차단 화장료 제재를 개발 하는 방법이다. 외관이 투명한 자외선 차단제는 유화물의 수상부와 유상부의 굴절률 차이에 따른 투명도를 통하여 외관이 투명한 유중수 타입의 자외선 차단제를 연구하였다. 지속성 및 내수성이 우수한 유중수 타입의 에멀젼을 연구하고 제형의 수상부 및 유상부의 비율을 조정하여 유중수형 유화의 안정성을 극대화시키는 방향으로 제형을 설계하는 연구를 수행 하였다. 연구 결과, 수상부와 유상부의 굴절률 차가 0.004이하일 때 투명한 유중수형 에멀전을 형성 할 수 있었으며, 내상부인 수상의 함량이 70% (w/w) 이상에서 안정한 유중수형 에멀젼을 형성하였다. 임상 시험을 통하여 투명한자외선차단제의 자외선 A 차단지수와 자외선 B차단 지수를 측정하였다. 그 결과, 자외선 A 차단지수는 $3.01{\pm}0.30$ 으로 나타났으며, 자외선 B 차단지수는 $30.99{\pm}1.65$로 측정되었다.

Keywords

References

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