The Ins & Outs Of Viscose Fabric + How To Shop It More Sustainably

Viscose fabric is made from cellulose that's been extracted from the bark, wood, or leaves of plants. It's most often made from bamboo, pine, or eucalyptus trees, but it can also be created from more unique plant products like corn husks, citrus byproducts, and sugar cane.

This semi-natural fabric comes with a few major environmental concerns. Starting from the raw materials side, upward of 150 million trees need to be logged every year to create viscose, making it a potential driver of illegal deforestation.

And as mentioned earlier, chemicals are then used to break down cellulose so it can be spun into viscose—some of which are toxic. One of the most ubiquitous, and dangerous, is carbon disulfide.

"[Carbon disulfide] is a powerful solvent that has been historically linked to causing hysteria in factory workers1," says Urska Trunk, a campaign manager at the Changing Markets Foundation, a European nonprofit that investigates and exposes irresponsible corporate practices.

"There is scientific evidence linking occupational exposure to this chemical to detrimental health impacts from coronary heart disease2 to leukemia3 to Parkinson's4 and stroke5."

Not only does the chemical pose an immediate health threat to workers, but it also pollutes surrounding communities.

When Changing Markets investigated some of the largest viscose suppliers in the world (most of which are located in Asia) they found that many of them were dumping untreated carbon disulfide wastewater into local lakes and rivers, threatening the livelihoods of those who lived downstream in the process.

There are a few groups working to clean up the viscose supply chain and convince companies to be more transparent about their manufacturing practices.

Canadian nonprofit Canopy, for example, is focused on helping brands ensure their viscose wood pulp hasn't been sourced from ancient or endangered forests.

On the chemical side, Changing Markets is encouraging brands to switch over to closed-loop production practices. These ensure all chemicals used in manufacturing are retrieved and pumped back into the system so they do less harm to factory workers and surrounding communities.

As of Changing Markets' industry report, 14 of the largest 100 fashion companies in the world have signed on to the group's road map and pledged to move toward more responsible. It's a start, but we clearly still have a long way to go.

Joss Whipple of The Right Project, a sustainable fashion consultancy that specializes in materials and design thinking, notes that the lack of regulation in the viscose industry is impeding progress.

Another thing that's driving a disjointed industry (and a confusing shopping experience for consumers) is the fact that some sustainable viscose suppliers sell their yarns under different names to differentiate them from "dirty viscose."

Deciding whether to buy viscose over another fabric like cotton or recycled polyester is tough because there are always trade-offs.

While viscose typically takes less water and pesticides to grow than conventional cotton, it comes with more land use and deforestation concerns. And while it's not produced from petroleum like polyester, viscose can still contribute to environmental contamination for the reasons we've covered.

"There are so many factors in deciding whether a fiber is responsible," says Trunk. "You would have to look at every stage of the supply chain and make sure that not only the environmental concerns are addressed but also workers' rights, social impact, and so forth."