Dr. Bonner condones OCA attack over 1,4-Dioxane Dr. Bonner condones OCA attack over 1,4-Dioxane 18-Mar-2008 By Simon Pitman Following on from the Organic Consumers Association (OCA) attack on cosmetic products marketed as organic but containing the petrochemical by-product 1,4-Dioxane, top organic player Dr. Bonner's applauds the action.