Some people in Bangladesh believe henna powder has health benefits and does not cause any medical issues as it is natural as opposed to those dyes created using man-made chemicals.
The mummies had been laid on the floor or in open clay coffins in a crumbling underground chamber in the northwestern Minya governorate.
Two Egyptian discoveries were unveiled by a French-led mission in the northern area of Al Asasef.
Archaeologists are hoping the mummification workshop will provide fresh insight into the chemical make-up of the oils used by ancient Egyptians to mummify their dead.
Egypt's antiquities ministry says funerary items have been also been found but it is not yet known whom the two tombs belong to. The tombs were discovered in the 1990s but excavation work did not start till recently.
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