Since Greenpeace published its Dirty Laundry report in 2011, revealing toxic chemicals in waste water discharges from two textile processing facilities in China, the environmental pressure group has been calling on apparel firms to remove these from their supply chains. While a number of companies have signed up to the group's Detox campaign, it appears there is still much more work to be done. just-style takes a look at the challenges of committing and the need for industry collaboration.