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Hi I recently purchased a macbook pro 2015 used and noticed some Marks on the display they almost feel like little scratches or small indentations on the screen and can be scratched at like a grain of sand they appear white with the screen off and black/grey with the screen on and I recently tried to clean them with a tiny bit of rubbing alcohol and now they’ve gone multicoloured any help/advice is welcome.
Do not use any chemicals on MacBook screens. The retina screens have anti glare coating on them that wear off over time causing the screen to look discoloured / worn out. Only use a microfibre cloth damp with water to clean these screens
The anti-reflective coating has failed on the cover glass. Apple did had an extended warranty on this Apple Extends Free Repairs of Anti-Reflective Coating on Select MacBook and MacBook Pro Models sadly its now ended. You’ll need to replace the full assembly MacBook Pro 13" Retina (Early 2015) Display Assembly and here’s the guide MacBook Pro 13" Retina Display Early 2015 Display Assembly Replacement Since you’re replacing the full display the halo effect will also be fixed.
