본 연구에서는 유화안정제 중 하나인 cetyl alcohol 함량에 따른 천연 염모제 헤나의 유화 안정성을 분석하고 가장 안정한 유화를 나타내는 cetyl alcohol 함량을 확인하였다. 유화 안정성을 분석하기 위해 cetyl alcohol의 함량에 따른 입자 크기, 입자 형태, 점도 및 염색 후 색상의 차이를 비교하였다. Dynamic light scattering (DLS) zeta 분석 결과, cetyl alcohol 3 %가 zeta potential 값이 115.9 mV로 가장 높은 값을 보였으며, 입자크기분포는 cetyl alcohol의 함량이 3 %인 크림 제형 염모제가 증류수에 분산된 헤나와 비교해 입도분포의 폭이 좁았다. 점도계 분석 결과 cetyl alcohol의 함량이 증가할수록 점도가 증가하였고, 크림 제형의 헤나 pH 측정 결과 두피에 적합한 pH 범위로 측정되었다. 또한 헤나 크림 제형 염모제에서는 cetyl alcohol의 함량이 증가할수록 유화 안정성이 증가하였다.

In this study, the emulsion stability of henna, a natural hair dye, according to the content of cetyl alcohol, one of the emulsification stabilizers, was analyzed, and the content of cetyl alcohol showing the most stable emulsification was confirmed. To analyze the emulsion stability, differences in particle size, particle shape, viscosity, and color after dyeing were compared according to the content of cetyl alcohol. As a result of dynamic light scattering (DLS) zeta analysis, cetyl alcohol 3% showed the highest zeta potential value of 115.9 mV, and the particle size distribution was henna in which a cream-type hair dye containing 3% cetyl alcohol was dispersed in distilled water. The width of the particle size distribution was narrow compared to. As a result of viscometer analysis, the viscosity increased as the content of cetyl alcohol increased. As a result of measuring the henna pH of the cream formulation, it was measured in a pH range suitable for the scalp. As a result, emulsion stability increases as the content of cetyl alcohol increases in henna cream formulations for hair dye.

요 약
Abstract
1. 서 론
2. 실 험
    2.1. 시약
    2.2. Henna powder 정제
    2.3. Cetyl alcohol을 이용한 천연 크림 제형염모제의 제조
    2.4. Cetyl alcohol 함량에 따른 안정성 확인
    2.5. DLS(Dynamic light scattering) 분석
    2.6. 점도 분석
    2.7. pH 분석
    2.8. Colorimeter 분석
3. 결과 및 고찰
    3.1. Cetyl alcohol의 함량에 따른 입도 분포와zeta potential
    3.2. pH 분석
    3.3. 점도(Viscosity) 분석
    3.4. Colorimeter 분석
4. 결 론
References

• 강이영(한남대학교 화학과) | Eyoung Kang (Department of Chemistry, University of Hannam)
• 이승희(한남대학교 화학과) | Seunghee Lee (Department of Chemistry, University of Hannam)
• 김운중(한남대학교 화학과) | Woonjung Kim (Department of Chemistry, University of Hannam) Corresponding author
• 정종진(한남대학교 화학과) | Jongjin Jung (Department of Chemistry, University of Hannam) Corresponding author