Traditional dyes are made of coal tar and petroleum in polluting processes. Israel’s Algaeing, however, creates fully bio-degradable formulations for dyeing, using algae, that produce zero waste. Combined with cellulose, or plant fibers, the formulation can create algae-based textiles.
https://nocamels.com/2022/11/algae-the-natural-alternative-to-dyeing-clothes-with-chemicals/