FORMULATION OF A CREAM CONTAINING ETHOSOMAL GREEN TEA (CAMELLIA SINENSIS L. KUNTZE) LEAF EXTRACTS FOR IMPROVED DERMAL PENETRATION
Objective: This study aimed to formulate the epigallocatechin gallate (EGCG) from green tea into ethosomes and measure the resulting increases in
skin penetration using a rat model.
Methods: Ethosomes were formulated using ethanol concentrations of 25% (F1), 30% (F2), and 35% (F3), and those with favorable characteristics
were then incorporated into a cream for the determination of penetration into Franz diffusion cells.
Results: We showed that the formulation F3 had the best spherical morphology, a Z-average value of 73.01 nm, a polydispersity index of 0.26, a
zeta potential of âˆ’47.77Â±3.93 mV, and the highest percentage of drug entrapment (49.46%Â±0.62%) compared with the other formulas. The total
cumulative EGCG penetration from the resulting ethosomal cream was 905.75Â±49.47 Î¼g/cm2, whereas that from the cream containing green tea leaf
extract was only 413.92Â±52.83 Î¼g/cm2.
Conclusion: These data indicate a higher penetration of EGCG from ethosomal green tea cream than from cream containing non-ethosomal green tea
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