cancel
Showing results for 
Search instead for 
Did you mean: 
Highlighted
Constellation

Strange stain on screen

Hello,

 Few days ago I noticed a small stain, 5 millimeters in width and 1 millimeter width on the screen

At first I thought it was a scratch, but I noticed that if I clean the stain with a microfiber cloth, it completely disappears.

But when I touch with finger where it was or wets the area, The stain returns!

It looks like this place rejects fat and water.

 

why is it happening? Is there a way to clear this stain?