Oval marks on screen from swiping on screen guard of iPhone

It’s barely noticeable when the screen is on, but if you turn it off and blow on it, there’s two very visible marks.
Considering they’re not going away after a wipe, is this something to be concerned about?
Is it affecting the screen of the device or is the mark just on the screen guard? Because I’m fine with the latter.
Considering they’re not going away after a wipe, is this something to be concerned about?
Is it affecting the screen of the device or is the mark just on the screen guard? Because I’m fine with the latter.
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Comments
Unless you have some kind of acid sweat which is disolving glass then you have some other issues.
Oh right; nothing to worry about