DefinePK

Abstract

Aloe vera variety Aloe Chinensis Baker is a species of the family Liliaceae that is widely known as a plant with many benefits as the raw material for cosmetics. The purpose of this research was to identify the effect of adding aloe vera gel extract on the formulation of lotion and its physical evaluation. For its application, aloe vera gel extract-based lotion was used as a moisturizer to prevent dry and dull skin. The variation of aloe vera gel extract consisted of 0% (0 ml); 33.33% (50 ml); 50% (75 ml); 66.67% (100 ml); and 100% (150 ml) of concentration, along with a variation of Aqua DM addition as one ingredient of the formulation of aloe vera gel extract-based lotion. The formulation method started with heating all the raw materials of lotion until completely melted, followed by mixing and stirring the mixture using the Flocculator/Jar Tester until combined evenly and homogenous. Next, the mixture was cooled to room temperature. Then, the physical properties of the lotion were tested for pH, density, viscosity, dispersive power, adhesion, weight shrinkage, homogeneity, as well as lotion emulsion stability. After that, a regression analysis was performed between percentage of addition of aloe vera gel extract and pH value of lotion with the regression equation in y = 2.7x + 3.85; R² = 0.9419; on density of lotion in y = 0.2181x + 1.4272; R² = 0.9096; as well as on viscosity of lotion in y = -265223x3 + 357053x2 - 92976x + 5050.4; R² = 0.6723. The result of this research showed that the best composition for lotion formulation as a cosmetic product was found in the addition of 66.67% aloe vera gel extract with pH value of 6.0; density of 1.600 gram/ml; and viscosity of 28430 cP.