What Is Bluesign? The Textile Chemical Safety Certification Explained By Chester Takau · July 2026 Short answer: Bluesign is a Swiss chemical-management standard for textiles. It screens the dyes, finishes, and processing chemicals used to make a fabric before production, restricting or banning hazardous substances (including a full PFAS ban as of January 2026) across the entire supply chain. It certifies inputs and manufacturing, not the finished bag's durability, price, or overall sustainability — those are separate questions. What does bluesign certification actually check? Bluesign uses what it calls Input Stream Management — it screens the chemicals, dyes, and finishing agents going into a factory, before a single meter of fabric is dyed or coated. That's the opposite of the more common approach of testing the finished product for banned substances after the fact. The bluesign system runs on two reference lists: the BSSL (Bluesign Substances List), which re...