A Modern Tale of an Old Blue Dye. Denise Lambert has spent decades rediscovering woad — and coping with blue hands. Listen to this article · 6:28 min Learn more. Share full article.

The pigment Egyptian blue was used in ancient Egypt and Rome, but the recipe was lost to time. Now, chemists have replicated ...

Scientists recreate lost recipes for a 5,000-year-old Egyptian blue dye. The oldest synthetic pigment in human history comes in a variety of hues. By Andrew Paul. Published Jun 2, 2025 2:39 PM EDT.

Blue spirulina powder. While major food brands scramble to reformulate iconic products and tech giants have quickly formulated blue dye alternatives, FUL Foods harnessed their proprietary ...

The chemical process for dyeing blue jeans has persisted for the last century. The denim industry uses about 50,000 tons of synthetic indigo a year, along with over 84,000 tons of sodium ...