Sparxell's EIC Accelerator Makes Colour Out of Wood Pulp

A butterfly's wing contains no blue pigment. Its colour comes from microscopic structures that interfere with light, and the same trick gives birds their iridescence. Sparxell, a University of Cambridge spin-out, builds those structures out of cellulose crystals from wood pulp: colour from geometry rather than chemistry, with no mica, no titanium dioxide and no dye. The company's argument is as much ethical as environmental, pointing to child labour in mica mining and health concerns about titania.

The EIC Accelerator selected the project, BIOSPECTRA, at its October 2024 cut-off as a grant-only award, and CORDIS records €1,948,834.72 from June 2025 to May 2027 to finish development and support scale-up and market entry. The project's case against the incumbent is quantified: a €38 billion colourant industry emitting up to 27kg of CO2 equivalent per kilogram of synthetic dye, with mining damage, colourants that cannot be recycled and some that take up to 500 years to biodegrade.

Pilots funded, partners unnamed

The project says the technology is already used in cosmetics and fashion, and the company says it has completed several fully funded pilot projects with global brands and manufacturers and will announce major commercial partnerships in 2026. As of October 2026, none has been announced. One report describes LVMH as a backer and another database lists textile inks developed with Positive Materials; neither is confirmed by the company's own public material.

That pattern, funded pilots with unnamed brands, is normal in specialty materials, where a cosmetics or fashion house will pay for development long before it will let a supplier use its name. It is also why the EIC grant's deliverables are about production and certification rather than demand: the company says tonne-scale production facilities should be operational in 2026 and is spending part of its new money on product certification for textiles, cosmetics and automotive uses.

A round built for a factory

On 5 February 2026 Sparxell announced a €4.2 million pre-Series A led by SWEN Capital Partners through its Blue Ocean 2 fund, which invests in ocean sustainability, with Alpha Star Capital and Cambridge Enterprise. The money is for the move from pilot manufacturing to industrial scale. "Sparxell's innovation is fully aligned with the ambition of our SWEN Blue Ocean 2 fund," said investment director Mélanie Le Guen.

The EIC award is grant only, with no EIC Fund equity, which fits a company whose private round arrived eight months later on its own terms. Together the two give it about €6 million for a scale-up in a market where its competitors are chemical companies.

1. Working colour platformIn useThe project says it is already used in cosmetics and fashion.
2. Paid pilots with brandsReportedSeveral fully funded pilots, none named.
3. Tonne-scale productionTargeted for 2026No facility or volume confirmed.
4. Commercial partnershipsPromisedThe company said it would announce them in 2026.

Regulation is pushing colour out of chemistry

European rules are closing in on exactly the materials Sparxell replaces: synthetic glitter and microplastics are restricted, titanium dioxide has lost its food use and faces scrutiny elsewhere, and brands face supply chain due diligence on minerals like mica. A colourant that is cellulose from end to end answers the regulatory problem and the marketing one at once, which is why cosmetics and fashion are the first markets rather than industrial coatings. The grant is European money funding a British company to supply European brands with a replacement for inputs European law is squeezing.