Wool dyeing with reactive dyes is a niche yet growing area, offering improved fastness and vibrant shades through covalent bonding between dye and fiber. Traditional methods often require high temperatures and complex after-treatments, increasing the burden on energy and water systems. Recent innovations have introduced reactive dyes engineered for low-temperature wool dyeing, minimizing energy use while preserving fiber integrity. These formulations often include auxiliary systems that boost dye exhaustion, lowering the presence of unfixed dyes in wastewater. Enhanced fixation also means less reliance on extensive rinsing, which is especially important for closed-loop or water-constrained operations. Sustainability considerations also extend to the elimination of AOX (adsorbable organic halides) and the use of biodegradable dye structures. Through B2B platforms, textile manufacturers can access performance and environmental data to select dyes that meet internal and regulatory standards, supporting both technical performance and ecological responsibility.