I don't really remember that our sweat is acidic or contains acidic substance. Most likely it is dirt from our skin mixed with sweat and cause sediments to accumulate on the aluminum surface. The surface is matte and it has good chances for holding dirt over long period of usages.

The usual recommendation, a damp lint cloth and soapy water to clean it. It dirt has been there for months, then its time to use a stronger agent like 50% alcohol swaps or something of similar nature.

I have a Macbook Pro 13 and its screen is very hard to 'clean'. I have all those solutions that works great but there's always some small traces of streaks.

So what I do is to use solutions for the first wipe, then another wipe to dry it off and then a nice microfibre for the finishing. With these kind of wiping action, static dust problems will come. So I have a nice soft brush to remove them.

By the way, does anyone know where to get a screen protector that covers the entire glass surface of the MBP?

Any retail stores selling these or at the garage sale? I've been looking high and low, no luck yet.

Recently the MacBook Pro screen is getting into my head Headaches after prolonged viewing. Its not the regular reflections of a glossy screen but the glass is too reflecting a lot of stray lights into my eyes. Can't really explain it.

By the way, any risks using it without a screen protector? I reckon a glass surface is quite resistant to scratches. Using a microfiber and a brush to clean out dusts.