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take there if you are concerned, but some people have more acidic oils than others, nothing to be concerned about

Im constantly swipping my mbp to remove my oils from it, im quite oily, it doesnt help the fact that I live in a tropical country, and stay around 4 months in an island, that is also tropical
 
should I be worried about it? will it get quite bad? I always wipe the laptop after usage and clean my hands before using it. So not sure if i'm doing anything wrong here...

I called Apple support and the guy stated that he has never seen anything like this before, So he suggested to take it into service repair to have the parts replaced. But not sure if I even want to do that.

My guess is you might be able to get it repaired or a new one perhaps.
I called as well and they told me they wanted to have a look at it.
But its just like a body paint coming off of a car.
It can look bad but no affect on the computer what so ever.

I might turn it in before my AppleCare runs out but not now.
Not in a hurry.
 
Is it the palm rests on either side of the trackpad that are starting to show wear? If it is this is something that happens to some people. I'm not a biologist, but it seems like it has to do with the acidity or reaction of certain individuals sweat. It does not occur to most peoples machines, but some people have a type of sweat and oils that cause it to happen. I worked as a Mac technician for many years and there were people who repeatedly have this issue, but most do not.

If you are wiping your machine down with a chemical substance like Windex after use this could be causing it as well.

Depending on the situation Apple may replace parts for you, although it will likely happen again. It is being caused by a external source, not a defect so it is their discretion. Most people I have run into that have this issue just learn to accept that their palms cause this reaction with the aluminum. So if it is the palm rests I would say not to worry about it :)

Hope this helps.
 
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