how to remove leftover glue of screen-guard from laptop lcd

[hskpunjabi]

Hello friends,
I have a 2 year old Sony laptop.Could anybody tell me how to remove leftover glue of screen-guard from laptop lcd.
I tried Colin but it didn't work.How is Luxor cleaning kit ? Any suggestions please

 

[Nerevarine]

alcohol with a q tip, unless it has olephobic coating which it doesnt