Here's a simple way to clean up a dirty secret in the shower: Choose bar soap over body wash. Liquid body washes are packaged in plastic bottles that -- even if they are recycled -- are made from petroleum sources. Bar soap is usually minimally packaged in paper. The No. 1 ingredient in body wash is water, which adds significant weight to the package, which requires more fuel to ship from factory to store. Even if the body wash is an all-natural or organic brand, bar soap has it beat as the greenest choice.