Its in the technique of the shave. I get BBS shaves 100% of the time and I absolutely love the feel of it.

Some areas on the neck and throat are the most difficult to get BBS as they require a certain stretch, pitch of the angle, scything motion, and only on my third pass do these work well to get this area BBS+.

I had to practice and try different things. 30 degrees is a decent guidline, but not the law. Occasionally a few hairs will be BBS in three directions, but I can slightly feel them in the forth direction. That is still BBS and sometimes they are best left that way so they grow out properly and don't give you problems. Only you will know this difference, not anyone looking at you.

If you can rub a cotton ball on your face and it doesn't catch any hairs, then you have a BBS shave.

I hope this helps some.

Pabster