Eventually I did: Principessa Bianco Breeze Hair & Body Powder. But then I came across too many reviewers who complained that the white powder refuses to blend in and is as visible on the head as a snowstorm. Finally, I turned up Lulu Organics Hair Powder ($40).
Lulu soaks up shine, doesn't leave a nasty chemical residue and it smells (in my case the jasmine/tuberose combo) delightful. Organic ingredients include Oregon Tilth Certified Organic (OTCO) horsetail powder. The OTCO is a nonprofit organization that promotes "biologically sound and socially equitable" agriculture. Products don't have to be grown in Oregon to qualify for certification.
Ingredients in Lulu Organics Hair Powder
White clay, baking soda, USDA Organic corn starch and rice powder, and Oregon Tilth Certified Organic horsetail powder and essential oils (lavender/clary Sage, patchouli/amber, jasmine/tuberrose).