inclusion criteria :  18 years of age or older; Suffering from chronic kidney failure On hemodialysis for 1 month Dialysed 3 times a week In heavy center ; fluent in French; Benefiting from a social security system; Agreeing to participate in the study exclusion criteria : Having cognitive problems hindering the comprehension of the tool. Under protection of justice (guardianship or curatorship). Patients allergic to the care products used Patients with additional precautions related to a high risk of cross-transmission such as emerging highly resistant bacteria, scabies, clostridium difficile, pulmonary tuberculosis. Patients in withdrawal from other dialysis centers