Cotton claims under the microscope
In an era of ethical promises, forensic science is exposing the truth behind the label.
As sustainability claims face unprecedented scrutiny, retailers are switching paper trails for chemical fingerprints to prove their fibres are as ethical as they claim.
With demand for sustainable fibres on the rise, the fashion world is facing a tricky new hurdle: proving environmental claims are more than just a marketing ploy. For major retailers, ensuring the natural fibres they sell, such as cotton, are free from forced labour or ecological damage is no longer just a nice-to-have.
Supply chain transparency is one of the biggest challenges for the cotton industry today, particularly in light of greenwashing scandals in recent years. In an era where "sustainable" is often used as a vague buzzword, backing origin claims with hard science could become the gold standard.
"We are proud to lead the way in science-based
origin verification"
This shift was sparked by some serious industry failures, most notably reports of cotton from Xinjiang, China, being produced through forced labour, which pulled some of the world’s biggest fashion brands into the spotlight.
Another wake-up call came in 2016 during a scandal involving one of the world's largest textile manufacturers, Welspun. The company was found to be using cheaper substitutes in place of premium Egyptian cotton for products sold to US giants Target and Walmart, leading to product recalls and an agreement to refund consumers who purchased bed linens up to the sum of US$36 million.
In the aftermath, Welspun admitted the "error" and turned to a New Zealand startup called Oritain to help repair its reputation, becoming the first global textile company to deploy forensic traceability at scale to rebuild trust.
Beyond paper
Unlike the digital paper trails that have let the industry down in the past, Oritain's origin-verifying tech works by measuring the distinct chemical markers left on products by local weather, elevation, and soil chemistry using a combination of forensic science and statistical analysis.
Oritain says its technique, which can also be found in oceanography and criminal forensics, involves analysing specific isotopes and trace elements. This biological fingerprint can then be matched against a database of samples from around the globe to verify the source of a variety of raw materials used across fashion, food, and agriculture.
In Australia, Country Road Group is listed among the retailers using Oritain to protect its brand integrity. Beyond the world of textiles, Meat & Livestock Australia has also partnered with Oritain on a project to map the chemical signature of Australian red meat and lamb so its authenticity can be validated in overseas markets.
Big W is another Australian business that's been working with Oritain. Given the huge volumes of cotton-heavy items it sells, from clothing to manchester and homewares, protecting its reputation is mission critical, according to the retailer.
In 2022, Big W also created a Sustainable Cotton Policy for its own-brand cotton products to ensure they meet labour laws and are free from child or forced labour.
The retailer, part of the Woolworths Group, says it is now ramping up its partnership with Oritain by becoming a Gold Member. This membership level gives it access to a more rigorous testing tier, making it the first Australian retailer to commit at this level.
Big W’s sustainability delivery lead Andrew Whale said that the move would allow the retailer to lead the way in science-based verification. “As the first Australian retailer to join as a Gold Member, we are proud to lead the way in science-based origin verification,” he said.
Oritain described the partnership as a milestone for transparency in Australian retail. “Their Gold Membership signals a strong intent to build trust, transparency, and accountability across their sourcing practices,” the company's chief customer officer Gemma Lynch said.
Humble beginnings
Oritain has come a long way from its roots as a specialised forensic startup in 2008. The core technology that was created at the University of Otago by Prof Russell Frew and Dr Helen Darling is now used by some of the world's most influential brands.
Today, Oritain's client list includes giants like Lacoste, Supima, and Primark, as well as food producers like A2 Milk and Nescafe, and in 2023, the company secured US$57 million in Series C funding. This round was led by Highland Europe, with existing investor Chanel also tipping in more capital to help the firm expand into new markets.
While Oritain focuses on isotopic fingerprinting, other players are also entering the space with different types of offerings. Spidfier, for example, is a biotech firm using DNA sequencing to verify origins in the seafood industry to tackle fish fraud.
Meanwhile, a tool called One Retail Hub was recently launched as a shared business platform for fashion and footwear companies to manage human rights and environmental due diligence. The platform is backed by retailers like Zalando, ASOS, and Boozt, and developed by TrusTrace, and is free for brands of all sizes to help them navigate the complex world of ethical sourcing.
Because local factors like weather, elevation, and soil chemistry vary by location, they leave a distinct chemical mark, including elements like oxygen and carbon, on raw materials. Oritain uses this chemical fingerprint to trace where a material, such as cotton, was grown. By using analytical techniques similar to those found in criminal forensics, Oritain says it can verify the origins of many products from coffee and horticulture to meat and dairy. It does this by analysing trace elements and isotopes such as oxygen and carbon, and then running these through statistical models and comparing them against its global reference database.
