Clean your acoustic guitar with soft cloths, mild soap, and water—never spray liquids directly on the instrument
An acoustic guitar collects dust, sweat, and skin oils on its body, neck, and strings every time you play. Cleaning it regularly keeps it looking good and helps the wood breathe, but the wrong approach can damage the finish, warp the wood, or corrode the metal parts. The safest method uses materials you probably have at home: a soft microfiber cloth, warm water, and a tiny amount of mild dish soap. You wipe, not spray. You dry when ready. You never let liquid sit on the wood.
The key difference between cleaning an acoustic and an electric guitar is that acoustic bodies are larger and made of thinner wood that absorbs moisture faster. A solid-top acoustic—the kind with a real spruce or cedar top—is especially vulnerable. Treating it gently takes five minutes and extends the life of your instrument by years.
Key Takeaways
- Use a soft microfiber cloth slightly dampened with warm water and one drop of mild dish soap; never spray liquid directly onto the guitar.
- Wipe the body, neck, and headstock with the damp cloth, then when ready dry with a second clean cloth to prevent water damage.
- Clean the fretboard separately with a cloth barely damp with water, and let it air-dry completely before playing again.
- Replace strings every three to six months if you play regularly, because old strings trap dirt and are harder to clean around.
- Avoid furniture polish, linseed oil, and commercial guitar cleaners unless you know your guitar's finish type, as these can strip or dull the wood.
What you need to clean an acoustic guitar
Gather these items before you start: two microfiber cloths (or soft cotton cloths—avoid paper towels, which scratch), warm tap water in a small bowl, and one drop of mild dish soap like Dawn. That is all. Do not use paper towels, old t-shirts with seams, or anything with a rough texture.
If your guitar has a glossy finish, you may want a third cloth reserved only for drying, so you do not accidentally rub dirt back onto the body. If you play in a humid climate or your guitar sits in direct sunlight, keep a hygrometer (a small humidity meter, under $15) nearby to monitor the air around the instrument—wood swells and shrinks with moisture, and extreme swings can crack the finish or warp the neck.
How to clean the body and back
Mix one drop of dish soap into the warm water. Dip one microfiber cloth into the water, then wring it out firmly so it is damp but not wet—water should not drip from it. Wipe the entire body of the guitar in the direction of the wood grain, using gentle circular motions. Pay attention to the area around the sound hole, where dust and skin oils accumulate most.
Work your way around the sides and back. Do not press hard; let the cloth do the work. Once you have covered the whole body, when ready dry it with your second clean, dry cloth, wiping in the same direction as the grain. This step is critical—any water left sitting on the wood can seep into the finish and cause discoloration or swelling. If you notice stubborn dirt or sticky residue, dampen the cloth again and wipe that spot once more, then dry it right away.
How to clean the neck and headstock
The neck and headstock collect sweat and grime from your hands. Use the same damp cloth (rewring it if needed) and wipe the back of the neck in long strokes from the body toward the headstock. Wipe the sides of the neck, then the headstock front and back. Again, do not soak anything—damp, not wet.
Dry the neck and headstock when ready with your dry cloth. Pay special attention to the tuning pegs and the area where the headstock meets the neck, because water can pool there and seep into the wood. If your guitar has a truss rod cover or binding (the decorative strip around the edge), wipe those gently too.
How to clean the fretboard
The fretboard is the most delicate part to clean because it is exposed wood with no finish protecting it. Use a cloth barely damp with plain water—no soap. Wipe each fret and the wood between the frets, working from the headstock down toward the body. You are removing dust and old skin cells, not scrubbing.
Dry the fretboard thoroughly with a clean, dry cloth and let it air-dry for at least an hour before playing. If your fretboard is rosewood or ebony and looks very dry (the wood appears dull and lifeless), you can use a specialized fretboard conditioner once or twice a year, but only if the manufacturer recommends it for your guitar. Do not use linseed oil or furniture polish on the fretboard—these can darken the wood unevenly or make it slippery.
How to clean the strings
Strings are the hardest part of the guitar to keep clean because dirt gets trapped underneath them. The easiest solution is to replace them every three to six months if you play regularly. New strings sound better and are much easier to clean around.
If you want to extend the life of your current strings, wipe each one individually with a barely damp cloth, working from the headstock toward the body. Slide the cloth under the string and pull it toward you, then flip the cloth and wipe the top of the string. Dry when ready. This removes surface dirt but will not get the grime that has already bonded to the string. Once strings start to sound dull or feel rough, replacement is the only real solution.
What not to use on an acoustic guitar
Avoid spray cleaners, even those labeled for guitars. Spray bottles create a mist that lands on the tuning pegs, inside the sound hole, and on the electronics if your guitar is amplified. Liquid pooling in those places causes rust, corrosion, and electrical problems. Wipe-on products are safer, but many commercial guitar polishes contain silicone or wax that builds up over time and dulls the finish.
Do not use linseed oil, tung oil, or furniture polish unless you have confirmed with the manufacturer that your guitar's finish can handle it. Some acoustic guitars have a nitrocellulose lacquer finish, which these oils can strip or soften. Others have a polyurethane finish, which reacts differently. When in doubt, stick to water and mild soap. Lemon oil and similar products smell good but can leave a residue that attracts dust and makes the guitar sticky to play.
Never use abrasive cleaners, scouring pads, or anything with bleach. Do not soak the guitar or submerge any part of it. Do not use a pressure washer or compressed air, which can force water into the wood or damage the finish.
How often to clean your acoustic guitar
Wipe down the body, neck, and headstock after every playing session if you play daily, or at least once a week if you play a few times a week. This takes two minutes and prevents dirt from building up. A deeper clean of the fretboard and strings can happen once a month.
If your guitar sits in a case most of the time, clean it before you put it away so dust does not settle on it while it is stored. If it hangs on a wall or stands on a stand, dust it weekly because it collects particles from the air. In dry climates, you may need to condition the fretboard more often. In humid climates, focus on drying the guitar thoroughly after cleaning to prevent mold or swelling.
When to call a professional
If your guitar has a crack in the body or top, a professional luthier (guitar repair specialist) should assess it before you clean it, because water can seep into the crack and cause further damage. If the finish is peeling, chipped, or separating from the wood, cleaning may make it worse—a professional can refinish the affected area. If the fretboard has deep grooves worn into it from years of playing, a professional can level and recrown it, which is beyond home cleaning.
If you are unsure whether your guitar's finish is nitrocellulose, polyurethane, or something else, contact the manufacturer or a local guitar shop. They can tell you what products are safe for your specific instrument. A five-minute conversation can save you from accidentally damaging a finish that took hours to explore.
Frequently Asked Questions
Can I use vinegar or rubbing alcohol to clean my acoustic guitar?
No. Vinegar is acidic and can damage the finish and corrode metal parts like the tuning pegs and bridge pins. Rubbing alcohol evaporates quickly but can strip finishes and dry out the wood. Stick to mild dish soap and water, which are gentle and effective.
What should I do if I accidentally spilled water on my guitar?
Dry it when ready with a soft cloth, wiping in the direction of the grain. Open the case and let the guitar air-dry in a warm, dry room for at least 24 hours before playing it again. If water got inside the sound hole or under the strings, tilt the guitar gently to let it drain, then dry the exterior and let it sit upright to dry inside. If the wood begins to swell or the finish bubbles, contact a luthier.
Is it safe to clean the inside of the guitar through the sound hole?
No. Reaching inside risks damaging the bracing (the internal wooden supports) or the back of the top. Dust inside the guitar does not affect how it sounds or plays. If you are concerned about debris inside, tilt the guitar and gently shake it so loose particles fall out through the sound hole, but do not insert anything into it.
How do I remove sticky residue from the body or neck?
Dampen a cloth with warm water and a tiny drop of dish soap, then gently rub the sticky area. If the residue does not come off after two or three passes, do not scrub harder—you risk damaging the finish. Let the damp cloth sit on the spot for 30 seconds to soften the residue, then wipe gently. Dry when ready. If it still will not budge, leave it and try again the next day.
Can I use a guitar polish made by a major brand?
Many guitar polishes are safe, but they are not necessary. A soft cloth and water do the same job without the risk of buildup or finish damage. If you want to use a polish, test it on a small, hidden area first—like the back of the headstock—and wait 24 hours to see if it dulls or discolors the finish. Read the label to confirm it is designed for your finish type.