Sustainable Wellbeing Carcinogen 1, 4 Dioxane/ Ethylene Oxide Free Tested by Independent laboratory Hypoallergenic Certified EcoLogo CO2Neutral 1, 4-dioxane and ethylene oxide may be found as contaminants in household products. This Attitude product does not contain these by-products listed as carcinogenic to humans by the International Agency for Research on Cancer (group 1 or 2). EcoLogo: We do everything we can offer to you the greenest products in the world. The EcoLogo certification is proof of our environmental leadership.ATTITUDE