Abstract
ABSTRACT
 Alpinia galanga (L.) Sw or galangal is widely used by Indonesian people as a spice in cooking.
 The content of catechins and 1-acetoxicavicol acetate in the extract is known to have antioxidant
 activity. The ability of these antioxidants needs to be applied to pharmaceutical dosage forms to
 improve aesthetics and ease of use. One of the topical drug delivery systems that is in accordance
 with the needs of the community today is the preparation of peel-off gel mask. The purpose of this
 study was to determine the effect of variations in PVA gelling agent concentration as a mask base
 on the physical characteristics of galangal extract peel-off gel masks. Three mask formulations
 were made based on variations in the concentration of PVA in the range of 5% -15%. The physical
 characterization of the preparations included organoleptic tests, homogeneity, pH, viscosity,
 adhesion, dispersion, and drying time. Homogeneity and organoleptic parameters were analyzed
 descriptively. The parameters of viscosity, drying time, pH, spreadability, and adhesion were
 analyzed statistically using Anova Single Factor with a confidence level of 95%. The results
 showed that the F1 and F2 formulas with PVA concentrations of 10% and 12.5% were the optimum formulas as a mask base. Based on statistical tests, variations in the concentration of PVA
 significantly influence the parameters of mask adhesion with a p-value of 0.0001 (
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