Ok, I shaved with this open comb:
and I got nicked big time. If I had a skin imperfection, it's gone now (including scalp). I was using Derby blades and HoneyBee soap.
What did I do wrong or am I just going to have to get my skin used to it?

and I got nicked big time. If I had a skin imperfection, it's gone now (including scalp). I was using Derby blades and HoneyBee soap.
What did I do wrong or am I just going to have to get my skin used to it?