Actually, I can handle both items in one shot. I keep a pack of moist wipes in my BOB. A bar of soap is not so practical, as it requires water to utilize effectively. The moist wipes have a cleaning agent built in that is suitable for hands, face, or in some cases whole body cleaning (they actually make a large version just for that purpose, and I've used em up at elk camp a time or two with good results). Yet they are gentle enough to use in place of toilet tissue.

We like multi-taskers in our BOBs. These are convenient and will get the job done.