eHow launches Android app: Get the best of eHow on the go.
Summary: Shaving a soul patch simply involves leaving the area right below your bottom lip. A single blade trimmer by Gillette is a great way to keep the edges sharp.
"The soul patch is a little patch of hair right below your bottom lip. Use a single blade to maintain yours by shaping around its edges."
eHow Article: How to Shave a Soul Patch