I think the serious environmentalist should start questioning some basic assumptions in our society. Is there any real need for people to bathe every single day? If you are not working out- chances are- you can go a few days without smelling too bad. If your hair starts to smell- a hat can cover up a good bit of that. Especially in temperature climates. Ovbiously- if you live in Florida you'd have good reason to shower every day.

For the vast, vast majority of human existence (or the vast majority of human civilization even), people never bathed everyday. What happens in this society is that people wash more often than is good for them. After they are squeeky clean, they now have to use moisturizer to replenish the natural oils that they've just washed off. It's a self defeating routine.

Likewise there is no need to wash our clothes every day or 2 days. If you hang your clothes out in the sun the smell will dissipate on its own.

Some cleaning activities- like brushing your teeth, or washing your dishes, are in fact necessary for proper hygiene. But this daily ritual of bathing and laundry is just that- a ritual, and a wasteful one at that.