Viscose, Rayon, and Tencel: Is Wood Pulp Fabric Really Eco-Friendly?

Viscose has a strange reputation. It is marketed as a "natural" fabric because it starts life as wood pulp, yet it also shows up in plenty of sustainability critiques as a fabric to avoid. So which is it? Is viscose sustainable, or is it a greenwashed alternative to synthetics dressed up in plant-based language? The honest answer depends heavily on how, and where, it was made, and that distinction is exactly what most sustainability labels fail to spell out.

This guide unpacks viscose, rayon, and their more sustainable cousin Tencel, three fabrics that all start from the same basic raw material but end up with very different environmental footprints depending on the manufacturing process behind them, and which one you find on a garment's care label matters far more than most shoppers realise.

How Wood Pulp Becomes Fabric

Viscose, rayon, and Tencel are all technically classified as semi-synthetic fibres, since they start with a natural raw material, typically wood pulp from trees like eucalyptus, beech, or bamboo, and then go through a significant chemical process to convert that pulp into spinnable fibre. This is different from a fully natural fibre like cotton or linen, which requires far less chemical transformation, and different from a fully synthetic fibre like polyester, which is derived entirely from petroleum.

The basic process involves dissolving wood pulp using chemical solvents, then forcing the resulting solution through tiny holes, called spinnerets, to form continuous filaments that are then spun into yarn. It is this chemical dissolving and regenerating step that determines just how "eco-friendly" the final fabric actually is, since the specific chemicals used, and how responsibly they are handled, vary enormously between manufacturers.

The Problem with Conventional Viscose & Rayon

Viscose and rayon are essentially the same fibre category, with "rayon" being the more common term historically and in the United States, and "viscose" referring to the specific chemical process most commonly used to produce it. Conventional viscose production relies on carbon disulfide, a toxic chemical, to dissolve the wood pulp during processing.

In poorly regulated factories, carbon disulfide and other processing chemicals can be released into the air and water with minimal treatment, posing serious health risks to factory workers and significant pollution risks to surrounding communities and ecosystems. This is the single biggest driver of viscose's negative reputation, and it is a legitimate concern in regions where environmental regulation and enforcement are weak.

There is also a deforestation risk to consider. While wood pulp is a renewable resource in principle, since trees can be replanted, not all viscose production sources its pulp responsibly. Some viscose has been linked to illegal logging and deforestation in ancient and endangered forests, which is why sourcing transparency matters just as much as the chemical processing itself when judging whether a specific viscose fabric is genuinely sustainable.

What Makes Tencel (Lyocell) Different?

Tencel is a branded name for lyocell, a fibre produced by the Austrian company Lenzing using a meaningfully different, and significantly less harmful, chemical process than conventional viscose. Instead of carbon disulfide, Tencel production uses a solvent called amine oxide, which is far less toxic and, critically, is recovered and reused in what is known as a closed-loop system, rather than being discharged as waste.

This closed-loop process allows Lenzing to recapture and reuse over 99% of the solvent used in production, dramatically reducing both chemical waste and the environmental footprint compared to conventional viscose manufacturing. Tencel is also produced primarily from sustainably managed, certified forests, addressing the deforestation concerns that have historically dogged some viscose supply chains.

There is also a specific variety called Tencel Modal, which uses a similar closed-loop process but is typically made from beechwood, prized for its exceptionally soft, silky hand-feel, frequently used in loungewear, underwear, and soft knitwear.

Comparing Water Use, Chemicals & Closed-Loop Production

When you compare viscose vs Tencel directly, the manufacturing process, not the base raw material, is what really separates them. Both start from wood pulp, and both require significant water for various stages of production, but Tencel's closed-loop system recovers and reuses the vast majority of both water and solvents, while conventional viscose production more commonly discharges chemically treated wastewater without the same level of recovery.

Rayon environmental impact, when talking about conventional, non-branded viscose production, tends to be considerably higher than Tencel's, primarily because of this difference in chemical handling and waste recovery, rather than any fundamental difference in the wood pulp itself. This is why sustainability advocates generally recommend looking specifically for Tencel or other certified lyocell over generic, unbranded viscose or rayon, since the label itself signals a meaningfully cleaner production process.

Cost Differences Between Viscose, Rayon, and Tencel

Generic viscose and rayon are typically among the more affordable fabrics on the market, which is a large part of why they show up so frequently in fast fashion, offering a silky, fluid drape at a fraction of the cost of natural silk. Tencel generally carries a modest price premium over generic viscose, reflecting the more expensive closed-loop manufacturing process and certified forest sourcing behind it, though it remains considerably more affordable than most other premium natural fibres.

That modest price difference is often a reasonable trade-off once you understand what it is paying for: verified, responsibly sourced wood pulp and a chemical process designed specifically to minimise pollution and waste, rather than simply the cheapest possible route to a soft, drapey fabric.

Certifications to Look For (FSC, PEFC, Lenzing)

A few certifications help separate genuinely responsible wood-pulp fabric from the rest. FSC, the Forest Stewardship Council, and PEFC, the Programme for the Endorsement of Forest Certification, both verify that the wood used to produce a fabric's pulp came from responsibly managed forests rather than illegal logging or endangered woodland.

The Lenzing brand name itself functions as a kind of quality signal in this category, since Tencel and Lenzing Modal are produced under the company's own closed-loop process and forest sourcing standards, verified through independent audits. If a garment simply says "viscose" or "rayon" with no further detail, it is worth treating that as a fabric of unknown origin, since there is no way to verify how it was made or where the wood pulp came from without a specific brand name or certification attached.

How Does Bamboo Viscose Fit Into This?

Bamboo has become an increasingly popular raw material for viscose over the past decade, often marketed heavily on the strength of bamboo's own genuinely impressive growing credentials, since it requires minimal irrigation, no pesticides, and grows remarkably fast compared to trees typically used for wood pulp. It is worth being clear, however, that the vast majority of "bamboo fabric" on the market is actually bamboo viscose, meaning it goes through the exact same chemical dissolving process as any other viscose fibre, regardless of how sustainably the bamboo itself was grown.

This means bamboo's low-impact growing profile does not automatically translate into a low-impact finished fabric, since the chemical processing stage matters just as much as the raw material for wood-pulp fabrics. Unless a bamboo fabric is specifically labelled as Tencel or produced under a comparable closed-loop process, it is reasonable to treat "bamboo viscose" with the same scrutiny you would apply to any other unbranded, generic viscose fabric, rather than assuming the bamboo starting point alone makes it a sustainable choice.

Care Tips to Extend the Life of Viscose, Rayon & Tencel Garments

Regardless of which specific wood-pulp fabric you end up wearing, a few care habits go a long way toward extending its lifespan, which matters for the overall sustainability of any garment. These fibres tend to be more delicate than cotton or linen, particularly when wet, so hand washing or using a gentle machine cycle in cold water, ideally inside a mesh laundry bag, helps prevent stretching, pilling, and fibre damage over repeated washes.

Air drying flat, rather than hanging or tumble drying, helps these fabrics retain their shape and avoid the stretching that can happen when wet fibres are left to hang under their own weight. Tencel in particular tends to be more resilient to washing and general wear than conventional viscose, thanks to its stronger fibre structure, which is another practical, everyday benefit that comes alongside its cleaner manufacturing process.

Storing these garments away from direct sunlight when not in use also helps preserve colour and fibre integrity over the long term, since wood-pulp fibres can be more prone to sun damage than some sturdier natural fibres like hemp or linen.

Which Wood-Pulp Fabric Should You Choose?

So, is viscose sustainable? Generic, unbranded viscose is genuinely difficult to recommend with confidence, given the well-documented chemical and deforestation risks tied to poorly regulated production. Tencel, by contrast, addresses both of those core concerns directly through its closed-loop chemical process and certified, sustainably managed forest sourcing, making it a considerably more trustworthy choice within the same broad fabric family.

If you love the soft, fluid drape that viscose-type fabrics offer, look specifically for Tencel, Tencel Modal, or lyocell on the label rather than a generic "viscose" listing. The base raw material might be similar, but the manufacturing process behind the label makes a genuinely significant difference to the fabric's real-world environmental footprint.

Conclusion

Wood-pulp fabrics occupy a genuinely interesting middle ground between fully natural and fully synthetic textiles, and their sustainability comes down almost entirely to how responsibly they are manufactured, rather than the wood pulp itself. Choosing Tencel over generic viscose or rayon is one of the simplest, most effective label-reading habits you can build into how you shop, and it is a habit that pays off every time you reach for one of these wonderfully soft, breathable fabrics. The next time a silky, flowing blouse or dress catches your eye, take a moment to check the fibre content label before you buy, and let that small habit guide you toward the cleaner, closed-loop version of a fabric family that genuinely has a lot to offer a more conscious wardrobe.

While we haven’t ventured into silky fabric categories just yet, watch this space to see how we incorporate conscious, closed-loop Tencel into future small-batch runs! In the meantime, ready to shop the change? Explore our circular fashion womenswear collection and find your next piece with a story worth telling.

Written by Monisha Krishnappa