Mango’s new material commitment, Circ’s $500 million factory, and a Swedish climate model lay bare the math that circularity in the fashion industry is progressing fast.
For decades, brands and watchdogs alike have cataloged fashion’s planetary costs: nearly ten percent of global emissions, more than ninety million tons of discarded textiles annually, and a water footprint so immense it rivals agriculture. But the numbers rarely led to action — not until now, when both the infrastructure and environmental modeling are finally catching up to ambition. Textile-to-textile recycling, once more theory than practice, is gaining structure. And the new players know the stakes.
Earlier this month, Spanish fashion label Mango announced it would begin incorporating fibers made from Circulose, a regenerated pulp derived from recycled cotton. While fiber innovation is not new to Mango — it previously partnered with Pyratex on a seaweed-based fabric and helped launch Spain’s Re-Viste scrap initiative — the Circulose agreement brings a new kind of material scale to its collections. “This collaboration marks a major milestone in our sustainability roadmap, aligning with our goal of using only lower-impact fibers by 2030,” Andrés Fernández, Mango’s director of sustainability and sourcing, said in a statement. “It reflects our commitment to fostering a more circular and responsible fashion ecosystem, where innovation and environmental stewardship go hand in hand.”
Circulose itself is newly reborn. Formerly known as Renewcell, the Swedish company filed for bankruptcy in February after top fashion houses failed to meet sourcing commitments. The company was rescued by Swedish private equity firm Altor and relaunched with a simpler name and sharper mission: to serve as a plug-and-play solution for brands that want access to low-impact fibers but don’t want to build the pipeline themselves. Jonatan Janmark, CEO of Circulose, sees Mango’s partnership as a signal to the rest of the industry. “We’re proud to welcome Mango as a circularity-scaling partner in this new chapter of Circulose,” he said. “This collaboration brings us one step closer to restarting our factory. We hope it sends a strong signal for other brands to follow.”
That factory, located in Sundsvall, Sweden, was at one point one of the most promising industrial textile recycling operations in the world. But in the months since the relaunch, Circulose has shifted its model. No longer just a material supplier, it now offers licensing agreements and traceability support — mirroring the kind of end-to-end systems fashion brands have long lacked.
The economic model matters. So does the chemistry. Circulose’s approach uses a chemical process that breaks down worn-out cotton garments into a cellulose slurry that can be dried, baled, and re-spun into new fibers. This pulp can then be made into viscose, lyocell, and other regenerated fibers, substituting virgin cotton and wood-based sources. It’s one of only a few commercially available materials that offer a true circular alternative without compromising quality.
But while cotton-based garments have always been the low-hanging fruit of textile recycling, the real mountain is polycotton — blended textiles made from both polyester and cotton, which currently account for over seventy percent of global production and are almost never recycled. The reason is simple: the fibers can’t be separated easily, and the result is usually a degraded, downcycled product. That is the problem U.S.-based company Circ has spent the last several years trying to solve.
Now, with €450 million in backing from the French government and the European Union, Circ is building what it calls the world’s first industrial-scale polycotton recycling plant. Set to open in 2028 in Saint-Avold, France, the facility will process up to 70,000 metric tons of blended textiles per year and employ about 200 people. It is, in the words of Circ CEO Peter Majeranowski, a breakthrough moment. “This will be the world’s first industrial-scale polycotton [recycling plant],” he said. “Now, most of the clothing produced is a blend of polyester and cotton, and that makes it very difficult to recycle, so having this facility is a major milestone.”
Circ’s hydrothermal technology gently separates the polyester from the cotton, preserving both in usable form. The plant will serve as a prototype, with partners including Worley, GEA, and Andritz supporting construction and engineering. Investment from Inditex and Patagonia has already brought the recycled output into rotation for brands like Zara, and demand is growing from suppliers in Asia, North America, and Australia who see the facility as a model worth replicating.
But what difference will all this make? That’s where researchers at the IVL Swedish Environmental Research Institute come in. In a comprehensive Monte Carlo analysis — the same kind used in climate science and high-finance forecasting — they modeled the environmental impact of increasing textile-to-textile recycling by just ten percentage points by 2035 across the European Union.
Their findings were stark. The model showed a 92 percent chance of reducing overall climate impacts, and a 100 percent likelihood of improving water stress indicators. Even a modest change in recycling rates could reduce climate impact by 87 to 95 percent. A major change could drive that number to 98 percent. Annual carbon dioxide savings were estimated at 440,000 metric tons.
The team factored in everything from waste collection and sorting improvements to energy decarbonization and the reduction in primary fiber production. What emerged was not just a best-case scenario, but a blueprint. The researchers were careful to point out that recycling alone cannot solve the fashion industry’s environmental issues. Fiber quality, energy efficiency, and the reduction of overproduction are still essential. But textile-to-textile recycling, especially at an industrial scale, could be one of the most effective levers the industry has. Today, less than one percent of textiles are recycled into new garments.
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