The fashion industry generates over 92 million tons of textile waste annually, yet less than 1% is recycled into new garments. While most recycling remains downcycling—turning old clothes into rags or insulation—a true 'fiber-to-fiber' closed-loop technology has quietly entered mass production. The denim collection jointly launched by Circ and H&M marks the first commercial-scale application of this technology on fast-fashion shelves.
From Lab to Shelf: The Distance Traveled
Circ's core technology is a solvent-based separation process that can break down blended fabrics into polyester and cotton components while preserving fiber quality. The separated cotton is converted into dissolving pulp, which then combines with the TENCEL™ Lyocell process to produce REFIBRA™ recycled fiber. In this denim collection, REFIBRA™ accounts for 20% of the composition, with the rest being organic cotton and a small amount of elastane.
The key differentiator: the technology does not require pure cotton input—it directly processes blended fabrics, which constitute the majority of current textile waste. Approximately 60% of discarded garments globally are polyester-cotton blends, which traditional mechanical recycling cannot handle. Circ's process effectively opens up this 'non-recyclable' category.
From an industry perspective, H&M's rollout is not a trial. The collection spans multiple men's and women's styles, priced on par with regular H&M denim products—no green premium. This indicates that supply chain costs are already manageable without brand subsidies.
Industry Impact: Recycled Fiber Is No Longer a 'Accessory'
Over the past five years, recycled fibers in apparel have mostly served as 'brand stories'—small batches, limited editions, premium pricing. The Circ-H&M collaboration sends a different signal: recycled fibers can enter the regular supply chain.
For upstream fiber producers and spinners, this shift demands product portfolio adjustments. REFIBRA™ fiber's spinning process is similar to standard lyocell, but wet strength and dyeing performance differ slightly. Mills taking such orders need to fine-tune their finishing processes, especially reactive dye uptake and colorfastness.
For buyers, especially brands and traders serving the European market, this technology directly addresses potential EU mandatory recycled content requirements. The EU has proposed that by 2030, no less than 20% of textile products should contain recycled fibers. Circ's technology offers a compliance pathway.
Cost and Scale: Real Constraints
Despite commercialization, scale remains a bottleneck. Circ currently operates a pilot plant in Virginia, USA, with an annual capacity of several thousand tons. Compared to the tens of millions of tons of discarded textiles globally, current capacity is negligible.
On cost, the solvent-based recycling process has higher energy and chemical recovery costs than virgin fiber production. Industry data shows REFIBRA™ fiber's ex-factory price is 15%–25% higher than standard lyocell, and significantly higher than virgin polyester. Whether fast-fashion brands can absorb this premium depends on two variables: cost reduction through scale, and consumers' willingness to pay a hidden 'closed-loop' premium.
Another risk is feedstock supply stability. Post-consumer textile waste varies widely in quality—color mixing, accessory residues, and other contaminants directly affect recycling efficiency and fiber quality. Circ needs to establish a stable waste sorting and preprocessing system, requiring coordination with recyclers, sorting centers, and brands.