Sometimes the best way to cut down on your consumption is just to use less stuff. Green Options writer Maria Surma Manka gave me a tip suggestion recently that will help you do just that: "Wash your hair every other day. I started doing this about 1 1/2 years ago and besides spending less time in the shower using up water, I buy shampoo and conditioner much less (half as much, actually). Plus, I get compliments nearly every time I get my hair cut about how soft it is, so it's really gotten healthier from not running it through products every day."
This is one of those win-win-win tips. Many people have the kind of hair that just looks and feels better when it's not washed everyday. (Win #1) By skipping a day, you are saving water, product packaging, and energy. (Win #2) And, as usual, it will also save you money. (Win #3)