Prep first
Before you start
- Check whether the spot is on the outside of the glass or inside the screen.
- Test the alcohol on a hidden spot first.
- Keep moisture out of ports, speaker grilles and seams.
- Power the device down before you wipe it.
Black marks on electronics screens are often greasy residue or rubber transferred from something the glass touched, and a fresh one lifts with a careful wipe. A spot that sits under the glass is damage rather than dirt, and no cloth or cleaner will reach it. Your first job is working out which kind you're looking at.
Start with a dry microfiber cloth and add only a little water if the mark won't budge. Black spots on a laptop screen need the same light touch as a phone, so don't press hard on the glass. If black spots on AirPods keep showing up, wipe the case and tips with a barely damp cloth rather than soaking them.
Before you start
What electronics & screens can take
Use with care2
- Water
- Solvents (alcohol, spot removers)
Avoid4
- Soaking
- Chlorine bleach
- Oxygen bleach
- Scrubbing and abrasives
3 items
What you'll need
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- Soft, lint-free clothLifts the mark without leaving lint or grit behind. (opens Amazon)
- 70% isopropyl alcoholUse 70% isopropyl alcohol on a soft, lint-free cloth, since it's the one cleaner a screen can take for a spot like this. (opens Amazon)
- Dry soft clothRemoves the last wet film so no moisture is left around the edges. (opens Amazon)
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6 steps
Step by step
Step 1 of 6
Find where the spot sits
Look at the mark in good light with the device off, and tilt it to see whether the spot moves with the glass. A mark on the outside surface can be wiped, while a round or ink-like spot that stays fixed under the glass is probably inside the screen.
Tip. Compare the spot with a clean area of the screen at the same angle.
Careful. A mark that sits under the glass won't lift with wiping.
Step 2 of 6
Power down and unplug
Turn the device off and disconnect any charger, cable or case that could catch moisture. With nothing live connected, you can clean the screen or the earbud case without worrying about a connection.
Step 3 of 6
Dampen the cloth and test
Wet a soft, lint-free cloth with 70% isopropyl alcohol until it's slightly damp, not dripping. Touch a hidden part of the device, such as the inside edge of the case or the back panel, and check for any change before you go on.
Tip. Pick a spot that is usually covered, like the underside of a laptop.
Careful. Spraying or pouring alcohol onto the device pushes liquid into openings.
Step 4 of 6
Wipe the spot gently
Wipe the mark in light strokes from the spot outward, using the damp part of the cloth and never pressing hard. Work only on the spot and a small border around it, so the rest of the surface stays untouched.
Tip. Fold to a clean section of the cloth every few strokes.
Careful. Moisture in ports, speaker grilles or seams can cause lasting damage.
Step 5 of 6
Dry the area thoroughly
Go over the area with a dry, soft, lint-free cloth until no wet film remains. Check it in the same light, and if the mark has lifted, the job is done.
Step 6 of 6
Check the result
If the mark is still there, don't scrub harder; the repeat wipe in the dried-on section below is the only next step. If it stays visible after that, the mark is probably inside the screen and needs a repair center.
If you'd rather buy than mix
Best products for black stains on electronics & screens
Plain 70% isopropyl alcohol with no added color or fragrance, plus a soft, lint-free cloth, covers this job. Skip any product whose label lists bleach, peroxide or abrasives.
Amazon Basics Microfiber Cleaning Cloths
How we picked these: each product is made for this type of stain, its maker doesn't warn against using it on electronics & screens, and its directions fit the steps above.
Finished the steps? How does it look?
Nice work. Let it dry completely and check it again in good light. Here is what done looks like:
How to tell it's really gone →A faint mark usually needs one more round, not a stronger product.
Heavy buildup usually takes more than one round.
Heavy or long-standing buildup →When to call a professional →How to tell it's working
The spot lifts or fades on the glass after one gentle wipe, and the cloth shows only a faint gray. If it looks the same after the dry pass, it probably isn't on the surface, so stop and check the screen for damage.
What changes for yours
Adjust for your electronics & screens
Phone screen
On a phone, the spot is usually on the glass and comes off with the alcohol wipe. Keep the cloth away from the speaker grille, the charging port and the seam around the edges, since moisture there is the real concern.
If the spot is round, sits under the glass, or looks like ink, it's probably display damage and no cleaner will lift it. Grime can also collect between a phone case and the screen edge, so take the case off before you clean.
Laptop screen
On a laptop, close the lid and unplug the charger before you wipe the display. Use the same lightly dampened cloth, wiping from the spot outward and staying clear of the keyboard vents and the edges where moisture can seep in.
A spot that stays after a careful wipe, or one that shows up inside the panel, needs a repair center to look at it. A closed lid also keeps the keyboard from pressing against a wet screen.
Earbuds
Earbuds and their case take only the lightest touch, so use a soft cloth that's slightly damp at most. Wipe the outer surfaces and the case lid, and keep liquid away from the speaker mesh and the charging contacts.
The mesh over the speaker is where a black mark tends to sit, and pressing into it only packs the grime deeper. If the mark stays after a gentle wipe, stop there rather than digging at it.
Heavy or long-standing buildup
An old spot that has sat on the glass for a while may need the alcohol wipe repeated. Dampen a fresh cloth with 70% isopropyl alcohol and go over only the marked area, using light strokes.
A mark that has dried on the surface gets the same treatment, with one repeat at most. Let the area dry fully before you judge the result, and don't add a second cleaner on top of the alcohol.
If the spot is still there after that, it's probably not on the surface. Stop and power the device down rather than scrubbing harder, since spots inside the screen usually mean the display needs repair.
Vinegar, baking soda, peroxide and more
Do home remedies work on black stains on electronics & screens?
Most home remedies are built for fabric, grout or metal, so many of them don't belong on a screen. Here is where each one stands for black marks on these devices, and why the alcohol wipe is the only cleaner in the steps.
Works1Skip1Avoid4
What makes it worse
Mistakes to avoid
Don't use bleach or peroxide on the screen
Chlorine bleach, hydrogen peroxide and oxygen bleach products are all ruled out for these devices. The alcohol wipe is the only cleaner in these steps, so stick with it.
Don't use household or window cleaners
Window cleaners, household cleaners, aerosol sprays and ammonia are all off-limits on displays. Cleaners containing acetone are off-limits too.
Don't soak or submerge the device
Never dip the phone, laptop or earbuds, or their cases, in any liquid. A soaked device is far harder to dry out than a damp one.
Don't rub with paper towels or abrasive cloths
Paper towels and abrasive cloths are ruled out for displays, so keep them out of the cleaning kit. A soft, lint-free cloth does the same job without the risk.
When to call a professional
A spot inside the screen is display damage, and it usually needs display repair, so book a repair rather than waiting. The damage may spread over time, so the sooner it's looked at, the better.
Questions
Is a black spot on my phone screen dirt or damage?
It's dirt if it wipes off the outside of the glass, and damage if it sits inside the screen or looks like round, ink-like marks. Try the gentle alcohol wipe first. If nothing changes, the inside of the screen is the likely cause.
Can I use bleach or hydrogen peroxide to lift it?
No. Bleach and hydrogen peroxide are ruled out for these devices, and oxygen bleach products are off-limits too. The 70% isopropyl alcohol wipe is the safe choice.
Is isopropyl alcohol safe on a laptop screen?
Yes, as long as the cloth is only slightly damp and you test a hidden spot first. Keep the liquid off the device itself, and finish with a dry, soft cloth.
What if liquid got inside my laptop?
Turn it off, unplug it, and get help from an authorized service provider before you use it again. Don't try to speed up drying with a heat source.
Can I clean my earbuds with the same cloth?
Yes, the same soft cloth works if it's only slightly damp. Keep liquid away from the speaker mesh and the charging contacts, and wipe the outer surfaces only.
Do I need to unplug the device before cleaning?
Yes, it's safest to power it down and disconnect any charger first. That way nothing is connected while the glass is damp, and you can see the whole surface clearly.
Black Stains on other materials
Other stains on electronics & screens
Start from the bigger picture
How we know this
Every method, amount and warning here comes from university extension services, industry bodies and product makers. We read them, check every step for unsafe combinations and changed amounts, and write it up so you can follow it.