All laundry detergents contain surfactants, which can harm aquatic life  However, the environmental effects of most ingredients in laundry detergents, including most of those in so-called ecologically friendly detergents, are unknown
Ttherefore, there is no reason to suppose that laundry detergents advertised as ecologically friendly are less damaging to the environment than other laundry detergents are
Laundry detergents that are advertised as ecologically friendly contain much lower amounts of surfactants, on average, than do other laundry detergents.