Any powder without Lanolin or the oily substance...

it should be dry as to not cause degradation to the heads from moisture...

and dont use a lot...you only need a small amount to be effective...

Also, once in a while sand the head, lightly, using light light light grade sand paper, or a soft grade of steel wool, to get the cake like build up
out of the syahi (sp?) and other parts of the head...BUT, not often and VERY VERY LIGHTLY!! It doesnt take much to clean it out..just a quick pass...

garett

I would think pure talc without fragrance and especially, no oils