Colorifix

The company's core technology utilizes synthetic biology. It starts by identifying the DNA sequences responsible for colors found in nature—from organisms like plants, animals, and microbes—using online databases. This genetic code is then inserted into a safe, engineered microbe, such as bacteria or yeast, which acts as a miniature biological factory to produce the desired pigment. These color-producing microbes are then grown in large-scale fermenters, feeding on renewable resources like sugar molasses and agricultural by-products.

Colorifix's business model involves shipping small quantities of these engineered microbes to textile mills and dye houses. These clients then cultivate the pigments on-site using standard fermentation equipment, a 'grow-your-own' approach that reduces transportation pollution. The entire fermentation broth, including the microbes containing the pigment, is then transferred directly into conventional dyeing machines with the fabric. When heated, the microbes burst and release the color, which binds to the fibers, eliminating the need for many of the toxic chemicals and mordants used in traditional dyeing. This process significantly reduces environmental impact, with independently verified savings of up to 77% in water, 53% in electricity, and a 31% reduction in CO2 emissions.

Headquartered in Norwich, UK, Colorifix primarily serves the fashion and textile industry, partnering with brands like H&M, Pangaia, and Vollebak to bring sustainably dyed products to market. The company is also exploring partnerships in the cosmetics and homewares sectors. Colorifix has expanded its operations to Europe and Latin America and has granted licenses in India and Sri Lanka. The company has secured significant funding to support its transition to full-scale commercial production, including an £18 million Series B round in 2022 and a further $18 million in 2025, with investors including Inter IKEA Group, H&M Group Ventures, and Regeneration.VC.