There are three kinds of glare and only two of them move
Every page ranking for this gives you the same sequence. Healing brush for the small patches, clone stamp for the bigger ones, pull the highlights slider down, try an app that says it does it automatically. Those are real tools and one of them may well be what you need, but the sequence skips the question that decides whether any of it will work.
Glare is not a layer of something sitting on top of your photograph. In the bright part of it the sensor reached the top of its range and stopped recording, so every pixel in that region holds the same maximum value and the differences that used to be there are not stored anywhere. Nothing can be brought back from a region that holds one value, because one value is all there is.
That matters because it splits the problem into cases that behave completely differently. Light bouncing off a sheet of glass in front of a print is one thing. A window blown out in the original exposure is another. A flash hotspot on a forehead or a laminated page is a third. Two of them have real answers and one of them does not, and knowing which you have saves you an evening of trying tools on a case that cannot respond to them.
Case one: a reflection off glass in front of the subject
This is the most common version by a wide margin, and it is the most fixable, because the glare is not part of the thing you are photographing. A framed print, a laminated certificate, a glossy magazine page, a screen. The reflection belongs to the room you are standing in.
It is fixable because the information is not missing from the world, only from this particular photograph. Take the print out of the frame and the problem is simply gone. If the frame cannot be opened, move until the reflected light source is no longer bouncing toward you, which usually means standing off to one side of straight on, or turning the frame rather than yourself.
If you have to shoot through glass, the physics gives you a real tool. A reflection off a smooth non-metal surface is partly polarised, so a polarising filter rotated to the right angle cuts a lot of it, and it is the one glare fix that removes the reflection before the picture is taken rather than patching it afterwards. Phone cameras take clip-on versions of the same filter.
- Open the frame. This is the whole answer when it is available and nothing else comes close to it.
- Shoot at an angle rather than square on, so the bright thing in the room reflects away from the lens instead of into it.
- Turn off the light that is actually causing it, and use indirect light from the side instead of anything overhead or behind you.
- A polarising filter, turned slowly until the reflection drops, for glass you cannot get behind.
- Shade the glass with a card or your body, and keep the camera itself out of the reflection while you do it.
Case two: a blown highlight in the original exposure
A window gone white, a sky with no cloud detail left in it, a lamp that is a shapeless blob. The exposure was set for the rest of the frame and the bright region ran past the top of what the sensor could record.
There is a narrow but genuine escape here, and it depends on the file. A raw file carries more range than the preview suggests, and the highlight recovery control in a raw editor pulls back detail that was recorded but not shown. There is also a per-channel case worth knowing: when only one or two of the three colour channels clipped, a recovery tool can reconstruct the third from the ones that survived, which is why a slightly overexposed sky often comes back and a completely white one never does.
If the file is a JPEG, the range was already thrown away when the file was written, and the slider that looked promising is not recovering anything. Pulling highlights down on a clipped JPEG region turns white into grey, uniformly, because the region holds one value and lowering one value gives you one lower value. That flat grey patch is why so many attempts at this look worse than the glare did.
Case three: a flash hotspot, which is the one that is gone
A direct flash near the lens throws a bright spot straight back at the camera from anything shiny: skin on a forehead or a nose, a laminated page, a glossy photograph, a pair of glasses. The spot is usually small, hard edged and completely white in the middle.
This case is the least recoverable of the three, and it is worth being blunt about why. The reflection and the subject occupy the same pixels, the sensor clipped across the whole spot, and the thing underneath was never separately recorded. There is no view from another angle hidden in the file and no channel that survived. What was under the hotspot is not in the photograph.
What remains is reconstruction, which is a different job from recovery and should be called by its own name. A retoucher, or a tool, looks at the skin or the surface around the hole and paints something plausible into it. On an even surface such as a cheek or a sheet of paper that works well enough that nobody will question it. Across an eye, a printed word or a patterned fabric it produces something that looks right and is invented, and if the photograph is being used to establish a fact rather than to look nice, that distinction is the entire point.
Why the automatic tools disappoint on this specific problem
Enhancers are trained to sharpen edges and add plausible detail. Glare gives them an edge, a very strong one, right at the boundary of the clipped region. So the predictable result of running a general enhancer over a glare patch is a crisper, more defined glare patch, because the model did its job on the only structure available to it.
The automatic glare removers that do exist are inpainting tools underneath. They detect a bright region and replace it with a guess assembled from the surroundings. That is the right approach for the third case and it is the only approach available there, but it is worth knowing that is what you bought, because the result is a surface that was generated and not a surface that was uncovered.
The honest hierarchy is short. Reshoot if the subject is still in front of you, because the first case usually is. Recover from raw if you still have the raw file. Reconstruct only when the first two are unavailable, and label it as such to yourself.
What to do with an old print that has glare in the scan
This is the version that brings most people here, and it is usually the first case wearing a disguise. The glare is not in the photograph, it is in the copy you just made of it, which means it is a capture problem and capture problems can be redone.
A flatbed scanner removes the whole issue, because its light moves with the sensor at a fixed angle and nothing in your room is reflected in it. If the print is still in a frame, take it out, and if it is stuck to the glass, that is a conservation problem rather than an imaging one and worth getting advice on before applying force.
If you have to photograph it, put it flat, light it from two sides at a shallow angle rather than from the front, and keep the camera square to the print without any bright thing behind you. The guide on scanning old photos works through the setup properly, and it is worth doing before any editing, because a clean capture leaves nothing to fix.
- Take the print out of the frame rather than trying to shoot around the glass.
- A flatbed scan beats a phone photograph for anything flat, and removes room reflections entirely.
- Light from two sides at a shallow angle, never from the front or from directly overhead.
- Check the result at full size before you put the print away, because a second capture is cheap only while the print is still out.
Where Unblur Photo sits, which is narrow
Unblur Photo enlarges and sharpens. It is not a glare remover, it has no inpainting step, and pointing it at a hotspot will give you a sharper hotspot for the reason described above. Saying otherwise would be the easiest sentence on this page to write and it would be false.
What it is for is what you are left with after the glare question is settled. A print you rescanned properly and now want larger. A photograph that was soft as well as badly lit. A frame from an old camera that is fine apart from being small. That is a resolution and sharpness problem, which is a different problem from a region with no data in it.
If the glare is the only thing wrong with your picture, the tool you want is a retouching editor with a healing or patch brush, or a person who does that work. The guides on improving photo quality and on restoring a photograph cover where an enhancer earns its place and where it is the wrong instrument entirely.
More guides
Questions
Can glare be completely removed from a photo?
It depends which kind you have. A reflection off glass in front of the subject can often be removed completely, by opening the frame, changing the angle or using a polarising filter, because the detail is missing only from that photograph. A region where the sensor clipped holds one value with nothing underneath it, so there is nothing to uncover and anything that appears there was painted in.
How do I remove glare from a photo on my phone?
Retake it if you can, since that fixes the common case properly: move so the light reflects away from the lens, or take the print out of its frame. If retaking is impossible, a retouching app with a healing brush can cover a small hotspot on an even surface such as skin or paper. Expect a reconstruction rather than a recovery, and check it at full size.
Does a highlights slider remove glare?
Only where the highlight was not fully clipped. On a raw file the recovery control genuinely pulls back detail that was recorded but not displayed, especially where just one or two colour channels ran out. On a clipped region in a JPEG it turns a white patch into a flat grey patch, because the whole region holds a single value and lowering a single value gives you one lower value.
How do I photograph a framed picture without glare?
Take it out of the frame if the frame opens, which removes the problem instead of reducing it. Otherwise stand off to one side so the bright part of the room reflects away from the lens, turn off the overhead or rear light, and light the glass from two sides at a shallow angle. A polarising filter rotated until the reflection drops handles what remains.
Will an AI photo enhancer remove glare?
A general enhancer will usually make it more obvious, because the glare edge is strong structure and sharpening strong structure is exactly what the model does. Tools advertised as glare removers are inpainting underneath: they detect the bright region and generate a replacement from the surroundings. That is the only option for a true hotspot, and it means the surface is invented rather than restored.
What causes glare in photos in the first place?
A bright source reflecting off a smooth surface into the lens, or an exposure set for the darker part of a scene while a bright part ran past the top of the sensor range. Flash near the lens produces the worst version, because the light goes out and comes straight back from skin, glass or a glossy print at the one angle the camera is looking from.