Stig, you get a cookie for this!
Yes, you can rejuvenate the pads in your brainbuckets. If memory serves, most of the manufacturers recommend doing it annually (probably so they can sell more pads!) which means you probably can do it every other year. I think the max life of a modern polycarb helmet is something like 6 years, so that would be two or three pad-replacements. Don't quote me on that.
Heh...
Nice going Stig!