In this work I mail a bar of soap with which I have bathed and washed myself to a friend or acquaintance. In the package I request that they use the bar of soap to wash with. The instructions on the index card read:
"It is (date). I have used the soap in this package to clean my body. Please take a shower and wash yourself with this soap. When you feel clean and ready, please mail this package with the soap to someone else. If the soap you receive is to small to send to someone else, please send it back to me. Thank you."
In this way the soap accumulates a sequence of contact, which consequently diminishes the physical presence of the bar of soap.
In the 3 years since I began the project, I have not received a single returned bar of soap, however, I occasionally encounter someone who has washed with one!