The process clothing companies use now requires petroleum and can cause serious pollution. So Huue is growing bacteria that excrete the exact right color, with no by-products.
Of the 4 billion-plus pairs of jeans that are made each year, most are dyed with petroleum-based dyes that use chemicals such as benzene and formaldehyde. At some factories, the toxic wastewater from the process is dumped into local rivers. But at a Bay Area lab, a startup called Huue is experimenting with a less toxic way to turn denim blue: using bio-based dyes brewed in bioreactors.
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