Restricts the use of restrictive housing in state-operated and state-contracted correctional facilities, with certain specified exceptions. Requires the Department of Corrections and Rehabilitation to develop written policies and procedures regarding restrictive housing by 7/1/2026. Requires the Hawaii Correctional System Oversight Commission to review certain housing placements. Requires the Department to develop policies and procedures to review committed persons placed in restrictive housing and develop a plan for committed persons currently in restrictive housing by 4/1/2026. Requires a report to the Legislature and Hawaii Correctional System Oversight Commission. Effective 7/1/2077. (SD1)