Natural dye LCA data revealed
16/06/2025
EverDye has patented a technology that is said to combine an innovative method of synthesising colourants with an electrostatic attachment principle. This makes it possible to avoid petrochemicals and mordants, to dye at room temperature, without changing equipment, and is said to be five times faster than conventional dyeing.
The main findings from the Everdye process LCA show a carbon emissions equivalent of 0.45 per kg of dyed fabric, with the dyeing conducted in France. Emissions would be 1.45 per kg in Turkey and 1.68 per kg in Tunisia. “Climate impact varies by location, largely due to differences in the electricity grid,” said Carbonfact, noting that if renewable energy were to be used in Turkey and Tunisia, the “impact would be in the same range as in France”.
The LCA draws on primary data from the pigment production, in Finland, and a dyeing facility in France, both pilot scale, and abides by the ISO 14040/44 standard, a cradle-to-gate LCA. Background data was taken from the Ecoinvent 3.10 database. Carbonfact believes EverDye’s technology outperforms conventional methods, including waterless dyeing with supercritical CO2.
Impacts of EverDye’s technology have been integrated into Carbonfact’s online database, where brand customers can access the information for their own sourcing needs. Other suppliers, in the likes of Lenzing, Carbios and Leather Working Group, have also contributed primary data to the online impact measuring tool.
Named one of Time’s Best Inventions of 2024, Carbonfact is based in Paris and was founded in 2021. Some 150 brands are said to have used the platform, including Carhartt, Sézane, A.P.C., Armedangels and Allbirds.
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