Patchouli oil contains patchouli alcohol as the main component which is a tricyclic tertiary alcohol sesquiterpene compound that is insoluble in water. Microemulsion is a droplet dispersion technology that combines an insoluble liquid with another liquid. The role of surfactants in helping the dispersion process of microemulsion formulation is by reducing the interfacial tension. Microemulsion is a supersolvents carrier, so that both hydrophilic and lipophilic can be administered through a microemulsion system. The purpose of this study was to formulate patchouli oil into a stable microemulsion preparation. This research was conducted by making 4 preparations of patchouli oil microemulsion containing 5% (F1), 10% (F2), and 15% (F3) patchouli oil, and microemulsion without patchouli oil (F0). Evaluation of microemulsion preparations includes organoleptic test, pH measurement, density determination, viscosity test, freeze and thaw test, centrifugation test, and particle size analysis. The test results showed that the microemulsion containing 5% patchouli oil had the most stable characteristics compared to other formulas.
Penuaan merupakan proses penurunan fungsi fisiologis dan terjadi pada semua organ tubuh manusia, termasuk kulit. Paparan sinar matahari langsung pada kulit mengakibatkan kelebihan radikal bebas dalam tubuh. Radikal bebas dalam tubuh dapat memicu terjadinya penuaan dini. Gejala yang jelas terlihat diantaranya munculnya keriput, kulit kering dan kasar serta timbulnya noda-noda gelap pada kulit. Salah satu upaya mengatasi penuaan adalah dengan antioksidan. Minyak nilam (Pogostemon cablin Benth.) telah terbukti memiliki efek antioksidan. Tujuan penelitian ini adalah menguji aktivitas anti-aging dari sediaan mikroemulsi minyak nilam. Penelitian ini dilakukan dengan membuat sediaan mikroemulsi minyak milam pada konsentrasi 0% (F0), 5% (F1), 10% (F2), dan 15% (F3). Sediaan kemudian diujikan pada kulit punggung tangan sukarelawan dengan menggunakan alat skin analyzer dengan parameter yang diukur meliputi kadar air, kehalusan, besar pori, banyak noda, dan keriput. Pengaplikasian sediaan mikroemulsi pada kulit punggung tangan sebanyak dua kali sehari selama 30 hari. Pengujian dilakukan setiap hari ke-10, ke-20, dan ke-30. Hasil uji aktivitas anti-aging menunjukkan bahwa sediaan mikroemulsi minyak nilam 5% (F1) lebih cepat terjadi pemulihan dalam meningkatkan kadar air, kehalusan kulit, mengecilkan ukuran pori, mengurangi noda dan keriput.
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