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자외선 차단용 에멀젼의 유변학적 성질이 자외선 차단 효과에 미치는 영향
Effects of Rheological Properties of Emulsions having Sunscreening Agent on Sun Protection Efficacy
(주)스킨바이오, 445-743 경기도 화성시 봉담읍 와우리 산2-2, 수원대학교 첨단과학기술연구원 811호 1LG생활건강 화장품연구소, 343-305 대전시 유성구 장동 84 2수원대학교 신소재공학과, 445-743 경기도 화성시 봉담읍 와우리 산 2-2
Skinbio Ltd., Rm.811, Lead Science Hall, The University of Suwon, San 2-2, Wau-ri, Bongdam-eup, Hwaseong, Gyeonggi 445-743, Korea 1LG Cosmetics R&D Institute, 84 Jang-dong, Yuseong-gu, Daejeon 305-343, Korea 2Department of Polymer Engineering, The University of Suwon, San 2-2, Wau-ri, Bongdam-eup, Hwaseong, Gyeonggi 445-743, Korea
gajette@hanmail.net
HWAHAK KONGHAK, October 2003, 41(5), 598-603(6), NONE
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Abstract
에멀젼 제형의 형태, 점증제의 함량, 오일의 극성 변화에 따른 에멀젼의 유변학적 물성이 자외선 차단 효과에 미치는 영향을 고찰하였다. 에멀젼을 피부에 도포하는 과정을 유변학적 변수를 이용하여 모사한 값과 실제 측정한 자외선 차단 지수를 비교해 본 결과 도포 후 제형의 회복 능력이 클수록 자외선 차단 효과가 커짐을 알 수 있었다. 또한 오일 종류에 의한 점탄성의 변화보다는 점증제의 함량에 의한 점탄성의 변화가 자외선 차단 효과에 더 영향이 크다는 것을 알 수 있었다. 같은 양의 자외선 차단제를 사용한 경우에도 에멀젼의 유변학적 성질에 따라 자외선 차단 효과가 다르게 나타날 수 있었는데, 이는 자외선 차단제의 추가적인 증량 없이도 자외선 차단 효율을 더 높일 수 있음을 확인하는 것이었다.
The effects of rheological behavior of emulsions depending on vehicle type, thickener content and oil polarity were investigated on the sunscreen efficacy of emulsions having a sunscreening agent. Rubbing procedure of sun-protecting emulsions on human skin was simulated by using rheological variables and the results were compared with monoprotection factors. It was found that the larger the tendency to return to the original structure of emulsion was, the more the protection efficacy against ultraviolet rays was. Change in rheological properties caused by varying thickener content had more effect on the screening efficacy than that by varying oil type. It was confirmed from this study that even the emulsions containing equivalent amount of sunscreening agent could differ in sun protection efficacy and thus the efficacy to protect against ultraviolet rays could be raised by controlling rheological properties of the emulsions without additional use of sunscreening agent.
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Park CI, Rheology for Cosmetic Science and Technology, 2nd Ed., Sungkyun Publishers, Suwon, 1-140 (2001)
