1 4 dioxane and ethylene oxide may be found as legally tolerated 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 carcinogen 1 4 dioxaneethylene oxide free tested in independent laboratory hypoallergenic co2 neutral we plant trees for your children septic tank safe not tested on animals vegan product