Clean old books dry, never wet. Dust with a soft brush or microfiber cloth, sweeping away from the spine; wipe cloth or hardback covers with a dry or barely damp cloth; and lift pencil marks in the margins with light strokes of an art-gum or soft vinyl eraser. Don't use water or household cleaners on paper, don't soak leather, and never erase ink. For anything valuable, a professional conservator is safer than aggressive cleaning — over-cleaning lowers value.
Published June 2026 · By Josh Eldred, New Mexico Literacy Project
What you need
Almost everything safe is dry: a soft brush (a clean, soft paintbrush or makeup brush works), a microfiber cloth, and a gentle art-gum or vinyl eraser. A vacuum with a brush attachment on low suction can help with heavy dust — but hold the nozzle off the book and brush dust toward it, never pressing a vacuum onto fragile pages. Notice what's not on the list: water, spray cleaners, and disinfecting wipes. Paper and moisture don't mix.
Step by step
1. Set up clean and dry
Work on a clear, clean surface with washed and fully dried hands (cotton gloves for very fragile or fine books). Keep the book closed at first so loosened dust doesn't slide down into the gutter.
2. Dust off the edges and covers
With the book closed, brush dust off the top edge of the text block, sweeping away from the spine so it doesn't pack into the binding. Then brush or wipe the covers.
3. Wipe covers by material
Cloth and hardback boards: a dry or barely damp microfiber cloth, then dry immediately. Leather: be cautious — don't soak it, and skip "leather conditioners" unless you genuinely know the binding needs it; the wrong dressing does harm. When unsure, just dust and stop.
4. Lift pencil marks gently
For pencil in the margins, use light strokes of an art-gum or soft vinyl eraser while supporting the page with your other hand. Never erase ink (it smears and tears), and skip erasing on brittle, coated, or already-fragile paper.
5. Know when to stop
If a mark or stain won't lift with gentle dry methods, leave it. The damage from pushing harder is permanent; the mark usually isn't a dealbreaker.
If the book might be valuable
Cleaning is one of the easiest ways to lower a collectible book's value — collectors prize original, untouched condition, and an obvious amateur cleaning is a red flag. If a book might be a genuine first edition or otherwise valuable, dust it lightly at most and stop; for real cleaning or repair, a professional book or paper conservator is the only safe route. How condition factors into value is covered in the condition grading guide, and longer-term care is in the preservation & storage guide.
Frequently asked questions
How do you clean old books without damaging them?
Dry methods only: soft brush or microfiber for dust (sweep away from the spine), a barely-damp cloth on covers, and a gentle eraser for pencil in margins. No water or cleaners on paper.
Can I use water or cleaning spray on a book?
No. Moisture stains paper, warps boards, and can trigger mold. Clean dry, and stop if dry methods don't work.
Should I clean a valuable book?
Minimally at most — over-cleaning lowers value. Dust lightly and leave the rest to a professional conservator.
Cite This Guide
Eldred, J. (June 2026). How to Safely Clean Old Books. New Mexico Literacy Project.
https://newmexicoliteracyproject.org/how-to-clean-old-books-safely
Licensed under CC BY 4.0.