Fixing agents and aftertreatment chemicals are used to improve wash, rub, and perspiration fastness in dyed and printed textiles. While essential for durability and color retention, many traditional formulations—especially those based on formaldehyde resins or cationic fixatives—pose health and environmental concerns due to their toxicity, persistence, or potential for skin sensitization. To align with sustainable production practices, manufacturers are shifting toward formaldehyde-free and biodegradable fixatives that maintain or exceed legacy performance standards. These next-generation agents offer improved compatibility with reactive, direct, and acid dyes, while reducing negative impacts on wastewater quality. Importantly, they also help minimize dye bleeding during laundering, reducing microplastic and dye release into water systems. Certifications like bluesign®, OEKO-TEX® Standard 100, and GOTS increasingly require documentation on auxiliary chemicals’ safety and biodegradability. In this context, suppliers offering transparent ingredient disclosure and evidence of environmental safety are gaining strategic advantage. B2B directories enable sourcing managers and production teams to find compliant, high-performance fixing agents and aftertreatments that meet customer expectations and regulatory standards—ensuring resilience across product lines and markets.