I just wash the brass with Lemshine in hot water. That gets rid of anything that's going to harm the dies.
Then, make sure that all the areas being sized, including the inside of case necks, is lubed, with a quality product, of which there are several, including some home made recipes.
I seldom bother to wipe off the lubricant after sizing, unless I'm loading cartridges where pressures are near maximum.
Part of the ability of a cartridge to handle those pressures and seal the sidewalls against the chamber, prevents gasses from flowing between the chamber and case, is how well the case adheres to the chamber walls. This can also have a negative effect on accuracy, especially if chamber dimensions are generous.
Back in the day, it wasn't uncommon for folks to purposely lube the cartridge cases to aid with extraction. Especially on some of the Ackley Improved versions with a 1 degree body taper and very sharp angle shoulders.
I had a Ruger #1 that required this type of lubrication. It was a pain in the butt, so I ended up turning that barrel into bedding pillars.