Disclaimer: I don't use an electric. I use multi-bladed disposables and shave gel.
The trick to avoiding razor bumps for us Brothas using razors is to shave with a new razor (or razor blade) in the direction that the hair grows. For me, that means shave backwards on the top, down on the back and horizontally down on the sides. So far, zero bumps.
My routine:
- hot towel for 3-5 minutes to open the pores
- apply shave gel and shave in short strokes
- when finished shaving, rinse with cold water
- pat dry then splash scalp with rubbing alcohol
- follow that up with applying after shave lotion
- apply cocoa butter stick and massage into scalp
- finish with a bit of extra virgin olive oil for shine.