British color tech startup Sparxell has joined forces with Portuguese innovation lab Positive Materials to unveil the world’s first industrial textile ink made entirely without chemical dyes or synthetic plastics. Harnessing plant-based structural color—an innovation inspired by nature—the biodegradable ink delivers high-performance results while offering fashion and manufacturing industries a scalable, sustainable alternative to traditional colorants.

According to Sparxell, this is the world’s first commercial ink that eliminates both chemical dyes and mineral-based additives while still meeting the performance standards required for large-scale textile production. The product is designed to appeal to a wide range of users—from independent designers to major global fashion brands.

The color system draws inspiration from nature’s own palette, specifically the structural coloration found in the wings of the Morpho butterfly. Rather than relying on artificial colorants, Sparxell’s ink generates color through microscopic structures derived from plant-based cellulose. These structures manipulate light to produce vibrant, lasting hues.

“This launch opens the door for manufacturers to access high-performance color technology without compromising sustainability,” said Benjamin Droguet, co-founder and CEO of Sparxell. “For too long, vibrant color has come at the planet’s expense. Our goal is to make bio-based color a new industry standard—and this is just the beginning.”

The first pigment available in this range is blue, offered in both matte and glossy finishes. Orders and industrial integration will be managed by Positive Materials, which will also oversee implementation within existing manufacturing systems.

A printed cotton T-shirt made exclusively with Sparxell’s new pigment is scheduled to debut in Europe this September. The company has announced plans to expand its color range over the coming months, offering broader customisation options and a complete spectrum of shades for the industry.

Droguet and co-founder Silvia Vignoli developed Sparxell’s technology during their research at the University of Cambridge. Their partnership with Positive Materials transformed it from a lab-scale prototype into a full-scale industrial application.

“Our collaboration with Sparxell is exactly the kind of innovation the fashion industry needs,” said Elsa Parente, co-CEO and CTO of Positive Materials. “We’re offering brands a sustainable color solution that’s as accessible and effective as conventional options—minus the environmental harm. The pigments are 100% biodegradable and entirely free of toxic chemicals.”