Unfortunately, there's no environmentally friendly detergent. All place a burden on the environment, in the materials they release into our wastewater and in their manufacture and packaging.
Some have less impact than others because they recommend lower doses and leave out ingredients that don't contribute to washing performance or may harm the environment. Ingredients commonly targeted are phosphates, enzymes, and optical brighteners.
Some laundry detergents claim to be more environmentally friendly than others. But how do we know they can meet their claims? Find out in "Accreditation schemes" below.