DyStar Eco-Advanced Indigo Dyeing

DyStar is a dyestuff and specialty chemical manufacturer and solution provider, founded in 1995 with more than a century of heritage in textile product development, operating through DyStar Singapore Pte Ltd. It has about 1,400 employees, operations in over 20 countries and 10 production sites, serving textile, leather and other industries with colourants, chemicals and services such as Color Solutions International, testing and the eliot tool.

Eco-Advanced Indigo Dyeing is a process for denim mills built around DyStar Indigo Vat 40% solution, a liquid indigo that enables a cleaner dyeing process for traditional indigo, sulphur dyes and coloured denim. It reduces the water, energy and sodium hydrosulfite needed in indigo dyeing and the resulting effluent load, while keeping shade consistency. It sits within DyStar's denim solutions and Cadira resource-saving dyeing concept, with technical support from DyStar's global denim team.

• Liquid indigo: DyStar Indigo Vat 40% solution as the core dye for a cleaner process.
• Water saving: up to 90% less water in indigo dyeing production.
• Energy saving: up to 30% less energy than standard indigo processes.
• Reduced hydrosulfite: sodium hydrosulfite cut by 60% to 70% or eliminated.
• Broad denim scope: applicable to traditional indigo, sulphur dyes and coloured denim.
• Technical service: support from DyStar's global denim team and the eliot tool.

Denim weaving mills in Vietnam can switch indigo ranges to the Eco-Advanced process to cut water and hydrosulfite use. Mills dyeing sulphur or coloured denim can apply the same approach to lower effluent load. Brands' Vietnamese suppliers can use the documented savings in chemical management and wastewater reporting.

DyStar states the process can reduce water use by up to 90% and energy by up to 30% compared with standard indigo dyeing. Sodium hydrosulfite can be cut by 60% to 70%, or even to zero, lowering effluent load and wastewater treatment needs. Mills gain better shade consistency without compromising quality, helping meet brand restricted substance and wastewater requirements.

Denim dyeing is among the most water- and chemical-intensive steps in apparel, and brands increasingly audit mills on wastewater and hazardous chemicals. Water stress and stricter discharge rules in Asian textile hubs push mills toward lower-impact dyeing. Vietnam's denim and garment sector serving global brands needs drop-in chemistry that cuts water and effluent without new machinery.

Founded in 1995 with more than a century of textile heritage; legal entity DyStar Singapore Pte Ltd, International Business Park, Singapore. About 1,400 employees, more than 20 countries and 10 production sites. Eco-Advanced Indigo Dyeing was announced in May 2023. Exhibited at Techtextil 2026 and released its FY2025 sustainability report with updated 2030 targets; ISO 14001 accreditation at its Gabus plant.