Together, Archival Mist and Paper Bright protect paper from the damaging effects of acid and light. Archival Mist deposits a safe, non-toxic alkaline buffer into the structure of paper that continues to work o ver time. This buffer neutralizes acids that can weaken paper and cause it to become brittle. Treated paper will last at least five times longer than if left untreated. Paper Bright contains safe, non-toxic UV absorbing compounds in an acid-free formula. It helps paper resis t the yellowing effect of age and allows it to retain it's brightness.