What can I use as white powder besides foundation powder and baby powder?

I'm trying to powder my face to be white (for a costume) but I'm having trouble. I don't have any pure white foundation powder, I lost my Halloween makeup, I can't find the baby powder, and baking soda didn't work at all. What can I use? I only want to go buy something at last resort. I'm... show more I'm trying to powder my face to be white (for a costume) but I'm having trouble. I don't have any pure white foundation powder, I lost my Halloween makeup, I can't find the baby powder, and baking soda didn't work at all.

What can I use? I only want to go buy something at last resort. I'm looking for things I can make at home or get easily
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