Makes sense, though.
clipped from

Blame for shampoo’s carbon footprint falls on user
By Katie Bird, 28-Jan-2009

Over 90 percent of the carbon footprint of a shampoo is due to the usage phase, according to German company Henkel.

The Dusseldorf-based company publicised its findings at a meeting on Monday to discuss the preliminary results of Germany’s Product Carbon Footprint Pilot Project.

Henkel calculated the carbon footprint of its Schauma 7 Herbs shampoo as well as a heavy duty laundry detergent as part of the project.

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