Company Brews Fabric Dye Like Beer, Cuts Water Use 77%

The fashion industry has been dumping toxic chemicals into waterways for over a century, but a company called Colorifix just figured out how to make fabric dye the way nature intended.

Instead of using petroleum-based chemicals, the British startup borrowed a trick from biology itself. They insert genetic code from naturally colorful organisms into bacteria, then grow those bacteria in fermentation tanks like breweries make beer.

"Very similar to how you make beer, but instead of alcohol, we're brewing the colour," explains Orr Yarkoni, CEO and co-founder of Colorifix. The result is vibrant dyes that bond to fabric without the 70 highly toxic chemicals normally used in textile dyeing.

The environmental savings are massive. For polycotton fabrics alone, the biological dyes save 77% of water, 51% of energy, and cut emissions by 31% compared to traditional dyeing methods.

Even more troubling, over 30 chemicals used in conventional dyeing are irretrievable. "No matter what you do to the water after you use them, they stay in the water, so they'll end up in the ocean," Yarkoni says.

The shift to synthetic dyes happened in the 19th century when manufacturers prioritized cheap, effective chemistry over safety. That decision has haunted rivers and oceans ever since.

Colorifix isn't taking shortcuts with safety. The company tests every dye for skin irritation, allergenicity, and cytotoxicity beyond what's required for synthetic alternatives. "We don't want to repeat the mistakes of the past of pushing with something that looks good and causes serious problems down the line," Yarkoni says.

The Ripple Effect

Major fashion brands have already started using Colorifix dyes in their production lines. The company now ships ready-to-use concentrates worldwide, meaning manufacturers don't need special fermentation equipment to make the switch.

After being named an Earthshot Prize finalist, Colorifix received interest from textile producers across the globe. The technology works across hundreds of colors and performs just as well as synthetic dyes, resisting fading from sunlight and repeated washing.

Yarkoni's vision extends beyond just fashion. "Colour is one of the worst things to make out of petrochemicals because nature makes every colour in the world, and rivers still run clean," he says.

The solution was hiding in plain sight all along, written in the genetic code of flowers, fruits, and creatures that have been making brilliant colors for millions of years.