The Sonax Polishing Cloths?
I didn't get free.
I had to buy it at RM14 a pack.

The guy said can wash and reuse 

It does look very similar doesn't it

But those for sweeping floor are meant to be used dry.
This one can be used wet.

What type of 'hazing'? Is it whitish haze or streaks of dark/bright patches?

Secondary gassing out...was still 'wet' when you're done. Probable cause are using too much product or cloth already saturated with product or damp. Could also be that the haze you're seeing is dirty ( BSD mixed with dirt) BSD that couldn't bond to the paint. Did you spray on car or on cloth? You'd need two cloth when using these kind of products - one for spreading and one for final buff...or change side to dry side when doing final buff. After final buff the surface should be dry to touch.

Have you tried going over the effected area again with BSD? Or normal shampoo wash? That should be able to remove or at least reduce the hazing. If not then I could be wrong and it's something else instead.

BMW's paint is quite hard. Had a few experience with them previously. It took a wool pad with M105 and quite a few passes to remove some minor swirl marks on a Z4. And I was unable to remove 3000 grit sanding marks with a polishing pad and M101 on an E35. Mind you I'm talking about using a rotary here....I can only imagine how it would be with a DA

Hmm no wonder. Even rotary also takes quite some time to remove the swirl marks. BMW really has a tough clearcoat 
How soft it is? Just wondering haha.

Im thinking to GB (Group Buy) this...

http://www.microfibermadness.de/en/incredimitt

Incredimitt

Microfiber Madness fans are waiting for a washmitt since years! And it took this time to work on a special product until we had the breakthrough in 2013. With the Incredimitt we usher in a new era in our company history, because this washmitt is produced by us in Germany!

The special fiber composition brings you a carwash expertience like never before. Special gliding fibers ensure the wash mitt slides over your cars surface, even on bad maintained paints. The Incredimitt does not scratch! A special build in sponge lets the washmitt soak up a high amount of water.

Additional to that, a special strap inside ensures that the Incredimitt wont slip off your hand. A smooth inlay in premium bed linen quality makes your hands feel comfortable during washing and a perfect fitted cuff with a Microfiber Madness embroidery perfects the washmitt.

Target application: Car Wash
Material: 92% polyester, 8% viscose

RM107.00 includding shipping to Malaysia without custom tax...(this price for 3 unit only)

did you wait 3-5 minutes?

also the red residue/color change is due to the chemicals reacting to the iron/metallic particles from brake dusts.
if you're not a person who hard brakes all the time/having performance brake pads or rotors, chances are you won't be getting much of those red/black ish color change.

experienced some hazing/residue with BSD too.

from my observation:
- surface have to be really clean.

- from the surface that i re-apply meguiar's ULW, the hazing is a lot less/easier to buff off

- surface that have dirt/spots that my washing missed will be a b**** to deal with

- when wiping/buffing off, apply light to no pressure so that you don't squeeze more BSD to the surface and you have to re-buff off again.

- as you apply BSD on the MF/surface, the cloth itself will begin to bead as the product sets in. consider multiple cloths when working with BSD to save time as the product will just bead itself off the cloth after long usage.

reminds me of meguiar's wheel brightener, very similar effect/strength and smell.

Hi all,

Appreciate some advice here. Just got a really bad, deep and long scratch at the bottom right of my car, covering the passenger door til the back wheel fender. Is it possible for me to apply primer, apply base paint and clear coat before polishing with compound or the extent of the damage is too bad for a DIY? Don't wanna spend a bomb and waste time leaving the car at the workshop for days.

Thanks mate. Any idea how much it will roughly cost?

Hi, there were some corrosive bird droppings on the car and i tried to use polish/wax/scratch remover to get rid of it but it became worst (there might be fine dust on the cloth too i guess). Any suggestions on how to remove the fine scratches? Although it's not so obvious and can been seen at certain angles only, i feel sad