Prior to learning the str8, I had fairly pronounced shave bumps at the corners of the mouth. 'Not ingrowns - they were more like warts - hard skin bumps. Disposables (and my lack of shaving skill) left no alternative but to mow & clean up the blood. With zero shave skills, I bled less w/ the straight, until getting a better feel for what 'no pressure' meant. A big plus was that with the str8 - the bumps went away & haven't returned. But I also learned how light a touch could easily mow a bump, a tender spot. If I nick, I will usually find & remove lather from the nick location before starting the shave so I don't re-open or irritate an existing nick. The honorable Godfather (Lynn) had a great thread on dealing w/ nicks that has stood me well for the last 7 yrs. There's a better goo out there for nicks than Neosporin - called Mederma - aimed at controlling/lessening any scar formation.

It sounds like you'll soon find this question solved with experience. It'll happen faster if you don't have the monkey on your back of having a perfect BBS shave each time.