From Reduction to Oxidation for Durable Colors

Sulphur dyeing is a technique where sulfur dyes, which are water-insoluble, are applied to textiles. These dyes are known for their deep, vibrant colors, particularly in shades of black, brown, and blue. The process involves reducing the sulfur dyes to a soluble form in an alkaline solution and then oxidizing them on the fabric to develop the final color making them durable and resistant to washing and light.