I am about to ride a 300km brevet, and the plan is to let the faster bike alone at home, and go with a heavier one, for a lot of reasons, and one of them is the riding position on the fast one makes friction against the saddle a long-term problem. Besides, it is fixed gear and since I cannot stop pedalling, the problem is even bigger.
I have seen people talk about the wonders of chamois creams and powders, and I am planning to use some. But since I tend to have a traditional approach (and to be very skeptical about fancy advertisements), perhaps using some traditional home-made solutions could become an interesting exercise in self-sufficiency.
Some folks told me from experience that corn starch makes an excelent sweat-absorber, and also helps the skin to not suffer from friction.
Some folks told me from experience that solid vaseline might be useful, too.
How can I make my own chamois cream?