What do you recommend for an LCD screen that is streaky due to being cleaned with improper materials?

Luke warm water and a very soft cloth

Distilled preferred and you want to wet the cloth vs spraying the monitor.
first choice would be a micro cloth if you have one.

Please post what improper materials were used...

I probably used window cleaning fluid. Yes, I know that was a stupid thing to do to an LCD screen.

If I can't find a microfiber cloth, would the next best thing be a handkerchief?

Let us know if water does not work.

I always use window cleaning fluid, and bad nothing ever happened.

Probably the safest thing to use are the special wipes made for LCD screens, or just a damp cloth.

Hi,
Most window cleaners will have ammonia that could damage the screen surface. While some cleaners will use alcohol that could cause damage or remove the anti-Clare surface.

You can use distilled water or charged distilled water to clean the surface using a micro-fiber cloth. In the USA the micro-fiber cloth is available at Walmart, Costco or good automotive service stores. Lately micro-fiber clothes have been available at Harbor Freight stores for under $2 for 4 piece package.

I use canned air to first blow any dust particles off the screen then clean using a mist spray bottle filled with distilled water. Spray the cloth then use on the display surface by moving in one direction, do not use circular motion. Either move side to side or up & down as you move across the screen surface using slight pressure. Be sure to shake out the cloth to remove any accumulated particles of dirt/dust. Then repeat the cleaning action when necessary.

Hope this helps.

The softer the better.

I find that old tshirts are the best if you dont have a microfiber cloth. By the way, if you have the option pre-wash the shirt in plain soapy water, not the usual hightech detergents/washing agents.

I have tons of microcloths. They are great for dust, but you need some amount of liquid sometimes.

Also note that many lens wipes contain alcohol. I've also used those and nothing bad happened.

Whatever you do, do NOT use acetone, that will surely dissolve plastic. Ammonia and alcohol and usually in too low concentration to cause damage. I mean I don't see any damage in any of my screens.

Ammonia will cause long term damage, it softens the plastic anti glare coating.

Also paper products (towels, tissues) leave tiny micro scratches that you can't see at first but will build up over time.

LOL, yeah but you can wipe the fascist corporate branding (logos) rights off.

I'm going to say 100% cotton only. Microfiber is usually made of polyester. Lexan/Plexiglass is pretty tough stuff though.

Acetone? Wow. If you're even suggesting that, I guess there must be some idiots who think acetone is appropriate for wiping off dust. Otherwise, saying "do not use acetone to wipe dust off an LCD screen" is like saying "do not iron clothes on body." Offhand, I don't even know what acetone is mostly used for, since I don't use it for anything. I just know it's a solvent that...dissolves things. I'm not interested in dissolving my computer or TV screen.

Acetone is used for dissolving nail polish, and in chemistry to dissolve pretty much anything organic. It will also dissolve fingernails and other keratin if used often enough and in high enough concentration.

for cleaning
mild hand soap yellow dial and a damp rag

BUT
fixing a already messed up screen ???

try in a corner or on a dead screen , this is just a guess

try "rain-X "
it is a micro polish

but replacing the cover might be the best bet

why not using the liquid product for cleaning the glasses? (with a micro clothe)

Beware, there are good and bad ones !! (liquid product compo).