Cleaning a MacBook pro
I use a Jessops Lens cloth (a heavy duty lens cloth).
I touch the tip of a washing up liquid bottle to get some of the liquid on my finger.
I then put some luke warm water into an egg cup and rub my washing up liquid finger in the water to put the miniscule ammount of washing up liquid into the water.
Then I fold up my lens cloth to make a 2" diameter rubbing area and rub some of the solution onto it. I don't dip it in as I don't want the lens cloth to be saturated for fear of some of the solution running on the laptop into crevaces and such.
For the screen:
I rub the solution lightly onto the screen until I see it has gone onto the screen. I then turn the cloth over to a dry area and buff the liquid off.
Small circular motions work best and I never force dirt off, I just continue to rub lightly until the mark has gone.
For the Body:
Same as above except I rub a little harder.
I have a matte screen and it works fine.
I have seen some dirty dirty Apple laptops and often want to take them away and make them look clean
I have found screen wipes are horrendous and leave more streaks than they remove. That goes for the screen and body. I suggest use a seperate dry cloth and apply some form of liquid to it for best results