For long term protection of your press printed books, take a proactive stance by avoiding possible damage. Do not leave your book in a hot car or expose it to water or other liquids. Use a dry anti- static soft microfiber cleaning cloth for cleaning fingerprints and removing dust or debris. Use outward cleaning motions so that any dirt falls outward and not into the crease of the spine. Keep the cloth in its original plastic envelope between uses. Do not use any cleaning sprays or chemicals.