I usually splash a lot of water in my face after the shave, to remove any remaining lather. Then I put on aftershave and usually some Trumper skinfood.

But I often see others (in shaving videos for instance) simply patting with a towel, and then applying aftershave. Doesn't this cause irritation if some soap remains on the skin? Is it important to remove the lather, or is it no biggie?