Abstract: A portable basin is disclosed which is adapted to receive and support a selected part of a person's body for isolatable cleansing, treatment and the like with minimal discomfort to the person. The disclosed basin is of unitary, continuous sidewall construction having certain body supporting contour features on its bottom and top edge and certain self-stabilizing features. More particularly, a basin of this invention provides an integral elevated platform portion feature in its bottom for receiving and supporting a selected body part during cleansing or treatment within the interior of the basin and at least one seat defined in the top edge of its sidewall contoured for concurrently receiving and supporting an associated member of the selected body part. One disclosed preferred basin embodiment is particularly adapted for cleansing and treating the head of a person.