ColorZen's Cleaner Way to Dye

A Cleaner Way to Dye
Photograph by Ysa Perez for Bloomberg Businessweek

The textile dyeing industry is among the worst polluters and water wasters. Dye houses in countries such as India and China dump hazardous chemicals into waterways, making them unsafe for drinking, and haven’t been eager to overhaul centuries-old practices. Tony Leonard, 64, a textile chemist from North Carolina, and Michael Harari, the 29-year-old son of a New York City apparel maker, are out to change that.

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