Abstract: A headband for retaining electrodes in position on a patient's head is disclosed, having an adjustable frame, straps for holding electrodes against the head, each strap fastened to the headband by an adjustable support, and the supports having weights removably coupled thereto such that gravity pulls the headband down against the electrodes. The headband may be used for transcranial electrical stimulation treatment or other treatment by electrodes. Further disclosed is a method of retaining electrodes on a patient's head, having the steps of positioning a headband having straps on the head, tightening the headband and straps, inserting electrodes between the straps of the headband and the head, mounting weights to bias the headband downwardly, and loosening the straps for greater comfort. The headband and straps may have markings to facilitate placement according to an electrode marking system.