Uji Antibakteri Jerawat secara In Vitro, Stabilitas Fisik dan Patch Test Krim yang Mengandung Etil P-Metoksi Sinamat dari Rimpang Kencur (Kaempferia galanga L.) = Antibacterial Tests against Acne In Vitro, The Physical Stability and Patch Test Using Cream Containing Ethyl P-Methoxy Cinnamate extracted from Rimpang Kencur (Kaempferia galanga L.)