Sparxell, a spin-out from the University of Cambridge, has partnered with Positive Materials to launch the world’s first commercially available plant-based structural colour textile ink. This breakthrough technology eliminates the need for traditional toxic dyes, synthetic plastics, and mined metals or minerals, marking a major advancement in sustainable textile colouration.
The ink is derived from Sparxell’s bioinspired pigment technology, which mimics nature’s method of producing vivid colour—such as the shimmering blues of Morpho butterfly wings—by manipulating light with microscopic plant-based structures rather than using chemical dyes. This process drastically reduces water and energy usage and prevents harmful pollution.
Initially available in Sparxell’s signature blue (with matte and shimmer finishes), the ink can be purchased in kilogram-scale orders from late June 2025. It allows brands of all sizes—from new designers to luxury houses—to adopt sustainable colour technology without engaging in bespoke development.
Printing orders will be processed via Positive Materials, which is also supporting the technology’s scale-up by integrating it into its production capabilities. The first full-product release—a printed cotton jersey—will launch in European markets by September 2025. Additional colours are expected throughout the year.
This launch comes amid increasing demand for sustainable alternatives, as conventional textile dyeing consumes vast resources and contributes heavily to global emissions and pollution. Sparxell’s biodegradable pigment ink directly addresses this challenge with a practical, performance-ready solution.
Dr. Benjamin Droguet of Sparxell emphasized that the company’s goal is to make bioinspired colour the new norm, while Positive Materials’ Elsa Parente highlighted the ink’s ease of adoption for designers and its alignment with the industry’s sustainability needs.
The development is backed by Sparxell’s growing momentum, including a €1.9 million EIC grant and participation in LVMH’s startup accelerator program.
