I never try for BBS. Sometimes it happens; sometimes it doesn’t but I always get a very good shave which lasts about 12 hours so I shave every morning. I only do two passes, the second pass is mostly just a whole face touch up. It takes a bit less than five minutes of actual shaving. Always use a straight razor since I have no other shaving instrument available.When I shave, I go for a BBS finish on my jaw lines, chin and upper lip. The rest I aim for a DFS finish so that I have something to shave 24 hours later.
It is now 14 hours since my last shave. My BBS areas are still BBS. How long does your BBS finish last?
I shave with a straight razor .