Sustainable Wellbeing Carcinogen 1,4-Dioxane Ethylene Oxide Free* 2 Hypoallergenic 3 Vegan 4 Septic Tank Safe 1,4-Dioxane and Ethylene Oxide may be found as legally tolerated contaminants in personal care products. This Attitude product does not contain these by-products listed as carcinogenic to humans by the International Agency for Research on Cancer. EcoLogo: We do everything we can to offer you the greenest products in the world. The EcoLogo certification is proof of our environmental leadership. CO2 neutral: Attitude is manufactured using 100% renewable energy and we plant trees to compensate our inevitable greenhouse gas emissions. This is how we contribute to the fight against climate change. Not tested on animals.