Physical Evaluation of Sunscreen Cream from Kappaphycus alvarezii Porridge and Alpinia galangal Infusion

Abstract

Physical evaluation of cream is one of the important parameters of acceptance of cosmetic products based on consumer tastes. Currently, it is not uncommon to find several studies with additional bioactive substances but the physical parameters were not good, thus affecting the assessment of consumers (panelists). Kappaphycus alvarezii is an ingredient that is known to have good physical parameter values, while galangal is an ingredient with good bioactive content. Research on these two materials has never been carried out. Therefore, this study aims to determine the physical evaluation of the best cream preparation from a combination of K. alvarezii porridge and galangal infusion. The research stages include made K. alvarezii slurry, manufacture galangal infusion, and formulating cream preparations with treatment ratios between K. alvarezii and galangal, namely control (RG1), 1:1 (RG2 cream), 1:2 (RG3 cream ), 2:1 (RG4 Cream). Physical test parameters include homogeneity, centrifugal test, emulsion type test, emulsion stability test and organoleptic. Based on the results that have been carried out, all creams are homogeneous with an O/W emulsion type. In the centrifugal test, all creams did not separate, and for emulsion stability, all creams were stable, with RG4 cream being the most stable. Organoleptic test results based on color and aroma parameters, RG4 values were not significantly different from RG2 and RG3 creams but were significantly different from control cream (RG1), while the appearance of RG4 cream was not significantly different from RG1 cream. These results indicate that RG4 cream is the best sunscreen cream preparation from a combination of K. alvarezii porridge and galangal infusion.