I have a problem with this process, however. Almost no matter what pre-shave preparation I do, almost no matter what shave soap, oil, cream, or butter (or any combination thereof) I use, no matter what post-shave preparation I put on my face, I too often end up with dry, irritated skin below the corners of my mouth.
[UPDATE: Since I have changed my daily ritual to a cool-water shave using my own formulation of shave soap, this irritation and dryness problem is no longer an issue. With a normal straight-bar DE razor, I will now often do a three- or three-and-a-half-pass shave. With my Merkur 37C slant bar, I often get a very close shave in just two passes.]
I have become convinced that it is the combination of two factors. The first is me being less hydrated (despite fluid intake) as I get older. These days I have dry eyes, dry mouth in the morning when I wake, and dry skin after shaving. The second factor is the effect of a sharp steel blade, acting almost like a squeegee, passing over sensitive skin.
So when I shave -- especially the most sensitive areas of my face (lower neck and below corners of the mouth) -- I am especially careful to avoid repeated strokes in the same geography. I do make sure my razor angle is right to get the maximum whisker removal per stroke in the most sensitive areas. The final tweak to my shaving process is to do a two-pass shave on a typical day rather than a three-pass shave.
My two-pass process is 1) WTG, then 2) generally and more or less ATG, with the exception of upper lip and below corners of the mouth. In those areas I definitely shave only XTG on the second pass.
For a daily shave (and I do shave every day), this two-pass process is adequate to get a fine shave. For those times when I want BBS, then a third pass is necessary ATG, with the second pass XTG.
What is your experience?