Colorful discovery on some Egyptian mummies (5)

I believe the answer is:

henna

(Other definitions for henna that I've seen before include "Reddish-brown plant dye" , "Hair/skin dye" , "Reddish cosmetic dye" , "Red hair dye" , "Reddish dye for hair etc" .)

I've seen this clue in the LA Times.

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