The denim industry often views third-party certifications as necessary but time-consuming, costly and redundant. They also play a vital role in validating innovations.

For Utah-based biotechnology-driven color innovation company Chloris Colors, certifications provide mills and brands with a clearer basis for assessing and adopting Claessen Blue, the firm’s flagship bio-based dye.

“Our certifications cover several requirements that matter when introducing a new dye into textile production,” said Dr. Lei Sun, Chloris founder.

Claessen Blue is a bio-based blue dye engineered to run on indigo lines and deliver indigo-like denim aesthetics. Compared to synthetic indigo, Claessen Blue uses a milder process with no harsh reducers like sodium hydrosulfite and lower alkalinity, resulting in cleaner wastewater and lower water and energy demand.

Earlier this year, the dye received ISCC PLUS certification, making it the first bio-based dye globally to achieve it. ISCC PLUS is an international certification system for bio-based, bio-circular and recycled feedstocks. Through independent third-party auditing and Mass Balance chain-of-custody management, it provides a credible framework for traceability, allocation and sustainability claims across complex industrial supply chains.

Claessen Blue has also earned USDA BioPreferred and TÜV Austria OK biobased certifications, which independently verify Claessen Blue’s bio-based carbon content. The dye is produced through fermentation using 100 percent renewable, plant-based feedstock. Claessen Blue has received the highest rating—four stars—under TÜV Austria’s OK biobased certification scheme.

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