I'm studying the preservation and conservation of library materials this quarter, and this video talks about some of the very topics we've been covering in class:
The real villain is acidity, which degrades paper and makes it brittle. If you have scrapbooks and best-loved books that are beginning to feel frail, you can stop the damage (sadly, nothing will restore it to perfect condition) by using Archival Mist. For stamps, there is Clarity, made by the same company, Preservation Technologies, which has a contract with the Library of Congress to preserve acidic materials in its collection.
Video comes via Explore.