JUST FYI - I find yeast infections and general irritations were minimized when I switched to a free and clear laundry detergent for my cycling shorts (and everything else too). No dyes or fragrances in a biodegradable formula. Given my success w/ that I'm hoping that any chamois butter would also be free and clear....any clue on that ladies?

The Astroglide comment made me think. What about lubes? Astroglide is pretty down-market imho, but there are lots of other longer lasting formulas that are specifically made for mucus membranes that might work for our biking purposes

Maybe some of these might work?
Primo Lube link