Denim has a water problem. Can this new digital dye solve it?

A startup called Wtrlss designed a better way to make blue jeans.

[Source Photos: Wtrlss]

The classic blue color of denim has an environmental cost: Dyeing a single pair of jeans uses 20 gallons of water and requires industrial chemicals. But a new approach to digital printing re-creates the same look with around 2 tablespoons of water and bio-based dyes.

A startup called Wtrlss, now beginning to work with major brands, developed a patented biochemistry dye that’s........

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