This certification primarily focuses on the use of hazardous substances during production. Most things don't grow in every color of the rainbow and dyes used for coloring can contain tons of chemicals which can not only hurt the people working with them but also soil and water systems when improperly disposed of. Founded in 2000, bluesign is a Swiss company taking a holistic approach using their criteria which includes everything from on-site assessments to various digital tools available to brands, manufacturers, and chemical suppliers. Learn more at www.bluesign.com.