Drysuit manufacturers recommend using unscented talc on the seals since the scented variety has some kind of adverse effect. I got tired of the dive shop prices on this stuff, and you can't find it in stores, so I googled it and found two sources: garden supply shops, where it is used for flower arranging or something, and adult toy shops, for all the latex goodies. Both are much cheaper than my LDS.
I got it at the garden shop.
