Garments return to ground
New Zealand label Kowtow secures a world-first in sustainability, transforming garments and returning them to the earth as a regenerative force rather than waste.
“For two decades, Kowtow has been uncompromising in its belief that clothing should come from nature and return to it without harm,” says founder Gosia Piatek. In February, the brand announced its most significant sustainability commitment yet: becoming the first global fashion brand to turn end-of-life, 100% organic cotton garments into organic biochar, a soil-enriching, biodiversity-supporting charcoal, at scale.
With clothing made from a single fibre (Fairtrade organic cotton) and completely free of plastic trims and hardware, Kowtow is uniquely placed to return its textiles to the earth in their entirety. In collaboration with Carbon Options and The Good Carbon Farm, textile waste transforms into carbon-rich biochar, a process that locks in carbon rather than releasing it into the atmosphere. Garments are placed in a low-oxygen drum and baked at 600 degrees – not burned – into their pure carbon form. The result is a porous, honeycomb-like material that performs ‘reverse mining’. Organic biochar can be blended into nutrient rich-soil soil; carbon returns to the soil where it belongs and customers can, quite literally, put their clothing back into the ground.
“By unmaking what we’ve made, we give back. This isn’t the end of a garment’s life. It’s the start of something bigger – a future where fashion becomes a force that restores, not extracts,” says Kowtow head of sustainability Tessa Bradley. Customers can be involved in this journey by returning their end-of-life garments to Kowtow. The team will unmake the garment, recycle elements such as trims and buttons, and return it to the ground as biochar.
While others in the industry may be exploring the possibilities of biochar, Kowtow stands alone in its ability to execute this at garment level and will incorporate it into the brand’s Regenerate Program from 2026 onward. “Kowtow will continue developing science-based, fibre-first solutions that allow every garment to be reused, repaired, resold, or returned to the earth,” Gosia adds.
