Thanks guys for turning me on to Headblade and Head Slick. The first time I used it I had very minimal bumps. I realized, that I was still pushing down on the blades. So the second time I shaved, I just let the head blade glide on my head without pushing and it worked!
This is my shaving routine: wet head with hot water, apply head slick, shave, put on rubbing alcohol, get in shower and let cold cold water run on my scalp,(to close pores) apply a conditioner, lastly put on an after shave. If you are having trouble with bumps, then try this out. It worked for me.
Question: how often do you guys change out your blades