Look for paper towels that contain recycled or Forest Stewardship Council (FSC)-certified fiber, or use cloth towels to eliminate paper waste. Use recycled paper for salon menus and fliers, and post your menu on your website. Replace bottled water with filtered water, and offer your clients beverages in glass and ceramic instead of wasting plastic cups or water bottles. Switch to free trade and/or non-toxic cleaning products such as Simple Green. Look for "formaldehyde-free" and "paraben-free" on the labels.
You can also help make changes to the environment just by changing your clothes. The fashion industry leaves a hefty carbon footprint, using more water than any other aside from agriculture, and it uses at least 8,000 different chemicals to convert raw materials to synthetic textiles. When purchasing salon uniforms and aprons, look for natural, organic fabrics like organic cotton, hemp, bamboo, and even seaweed.