I second what Sky wrote about the oil pastels and powders. Ephiane, who discovered (as far as we are concerned) the oil pastel coloring technique thinks that the oil pastel also might help protect the body, and she may be right. But I would still re-apply protective powder to it (you will have to remove it to repaint the body anyway -- if you will be repainting it to begin with). Otherwise, the powder definitely helps keep the body non-tacky, which is both for the sake of handling it (and everything it touches -- even powdered it will eventually make a spot on paper or cardboard, be warned), and for the sake of keeping the soft material in good shape. You might need to wash the body with soap and water on some occasion whether or not you are painting it, and it should be re-powdered. Again, several things work about as well -- corn starch, baby powder, cosmetic silicon powder.
Various items and resources relating to these are covered or linked in the TBLeague catalog topic (including maintenance, cleaning, painting, clothing), here:
https://onesixthfigures.forumotion.com/t3013-tbleague-phicen-seamless-bodies-with-steel-skeleton-catalog-updated-continually
Various items and resources relating to these are covered or linked in the TBLeague catalog topic (including maintenance, cleaning, painting, clothing), here:
https://onesixthfigures.forumotion.com/t3013-tbleague-phicen-seamless-bodies-with-steel-skeleton-catalog-updated-continually