Swedish scientists unveil the world’s first recycled cotton garment

Story: 2014 C.E.  |  Last updated: January 1, 2014

A yellow dress changed the way the fashion industry thought about its waste problem. In June 2014 C.E., a group of collaborating Swedish companies presented what they called the world’s first garment made entirely from recycled cotton — a material that accounts for roughly one third of all global textile consumption. The dress looked indistinguishable from something off the rack at a high-street retailer. What was underneath it, conceptually, was far more significant.

Key findings

• Recycled cotton garment: Swedish company re:newcell, working with partners including SKS Textile, produced a fully wearable dress from cotton that had been broken down to the molecular level and rebuilt as rayon fiber — no new cotton required.
• Cotton recycling process: Researchers at Stockholm’s Royal Institute of Technology developed the underlying method, which shreds old cotton clothes into a pulp, removes non-recyclable elements like zippers and buttons, and converts the remaining cellulose into new textile fiber.
• Cellulose fiber technology: Because the process works on any material containing cellulose, it opens the door to recycling blended fabrics — not just pure cotton — though pure cotton yields the best results.

Why cotton needed this

By 2013 C.E., the average person on Earth was consuming around 10 kilograms of clothing per year, up from 6.7 kilograms just a decade earlier, according to data from the United Nations Food and Agriculture Organisation. Global textile consumption hit 69.7 million tonnes in 2010 C.E. alone.

Cotton is central to that problem. It is thirsty, land-hungry, and increasingly scarce as growing populations compete for agricultural space. Most worn-out cotton clothing has ended up in landfill or repurposed as carpet underlay — only to reach the landfill anyway once the carpet is torn out.

The re:newcell process offered something different: a closed-loop system where old cotton clothes become the raw input for new ones, with timber cellulose as the only supplementary ingredient.

How the process works

Old cotton garments are collected and shredded, then processed into what Henrik Norlin, business development manager at re:newcell, described as a “porridge-like substance.” Non-recyclable components are removed. The remaining material is broken down to the molecular level and reconstituted as a fiber that can be spun into rayon fabric.

The result is a new textile of comparable quality to the original — and one made without petroleum, synthetic chemicals, or virgin cotton fields. Re:newcell was already planning its first commercial factory at the time of the announcement, with a projected capacity of 2,000 tonnes per year and expansion into the U.K. and Germany to follow.

One of the earliest commercial applications was practical rather than fashionable: SKS Textile, also based in Sweden, was working with county-level public healthcare systems to supply workers with uniforms made from the recycled material.

A parallel from Japan

Swedish researchers were not working in isolation. Japanese company Teijin had developed a comparable technology for polyester — polymerising discarded polyester, converting it to chips, and respinning those chips into new fibers of equal quality. Teijin reported CO2 reductions of 77% compared to virgin petroleum-based polyester.

Together, these two approaches — one targeting natural fibers, one targeting synthetics — pointed toward a future where garments could be designed for recovery rather than disposal. The trajectory Norlin described was optimistic but grounded: “Early on in paper recycling, only a small share of paper was recycled. Now most paper is recycled and yields good results. We could see fabric do the same thing.”

Some brands were already moving in that direction. Levi’s had begun incorporating discarded clothing into new garments, and researchers and designers across the industry were exploring composting and biodegradable dyes as complementary solutions.

Lasting impact

The 2014 C.E. yellow dress became a proof of concept that rippled through the textile industry over the following decade. Re:newcell went on to build its first commercial facility in Sundsvall, Sweden, and its Circulose material — a dissolving pulp made from 100% textile waste — has since been adopted by brands including H&M, Levi’s, and Filippa K.

The broader principle — that fashion’s waste stream could become its feedstock — has helped reshape how the industry talks about circularity, influencing legislation in the European Union around extended producer responsibility for textiles and encouraging investment in fiber-to-fiber recycling infrastructure globally.

Blindspots and limits

The process has real constraints. Rayon is considerably harder to recycle than the original cotton, which means the recycling loop is not fully closed — it extends the life of fiber rather than creating true perpetual circularity. Lewis Perkins of the Cradle to Cradle Products Innovation Institute raised a pointed concern: textile recycling frequently involves heavy metals and dyes that complicate the process and raise questions about the cleanliness of outputs, even where companies report clean results. Composting, he argued, could ultimately prove more ecologically sound — though that solution awaits better innovation in dye chemistry before it becomes viable at scale.

Read more

For more on this story, see: The Guardian

For more from Good News for Humankind, see:

• Renewables now make up at least 49% of global power capacity
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• The Good News for Humankind archive on sustainability

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