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Egyptian Blue: The Prized Dye Used In Egyptian Mummy Portraits, Roman Frescoes, And Renaissance Masterpieces
The Egyptians utilized this pigment extensively, applying it to a variety of materials such as stone, wood ... History Of Egyptian Blue, The World’s Oldest Synthetic Dye Widely considered ...
BBC3y
Why are people dyeing their poo blue?
Social media users have been posting pictures of vibrant-blue cupcakes with the unique hashtag #bluepoopchallenge. Yep, that’s right. Blue. Poop. Challenge. This didn’t start off as a viral ...