Clean bibs (jersey, socks and gloves) every morning.
Pyjamas trousers (i.e. very large, without any underwear, so that your skin can "breathe") as soon as possible since arriving at the control where you plan to stay overnight until just before leaving.
If you are looking for an alternative to Sudocrem, Bepanthen's been great for me and for some friends of mine, either before to prevent, or after to heal.