Hello Silverware, mind to share how do u resolve the problem?? I do not think the tint will cause the problem. I am suspecting the problem is on the external windscreen.

wash with water ady still persist and you still think it's rain x? hahaha.

The acid watermark removal is never meant to be used on the wiper area of the front windscreen as there are scratches and stone chip. The acid will fill into the holes of the scratches and make it blurry. This is not the 1st time happened.

The remedy is to polish put the acid at the scratches by using heavy paint correction compound.
The pro will be using Meguair's m105 or Glass Compound such as Osren or CeriGlass

For Consumer - use the glass compound such as Soft 99 Glass Compound Z which is available at Brother's Kelana Jaya for about RM 30+. If that's too far, you may use Autosol Metal Polisher in toothpaste that is available in any hardware shop or hypermarket. It may cause micro (tiny) scratch, not naked eyes visible but against sun light as it is not meant for glass.

Be prepared to rub and rub (many rounds) to see improvement.

If left uncorrected, the blurriness will disappear after 1/2 year to 1 year time depending on the taken to dilute acid from the scratch. If you cant's wait and want a quick solution and willing to pay, is to sent to the pro detailing shop and the normal charges are between RM 150-RM 250.

Normally, the acid is only used when the glass is heavy stained . Acid is the fastest but not the safest way to clear watermark on windows.

The above are based on actual experience when used a similar acidic product brought at hypermarket.

This post has been edited by mot88: Feb 10 2016, 05:08 PM

I did not fully solve the problem but i think it got lesser over time.

It is the windscreen, what i meant was i initially thought the tint was the issue.

How good is Soft 99 based on your experience?

Many thanks Mot88. Will send the car to expert this time round. But what would this treatment called? Any car saloon will do the job or must be a specific car saloon?

OIC, thought u resolved the problem. Thanks for sharing Bro.

Soft 99 is the best consumer product specifically formulated for glass compound and the price is cheap compared to professional product but still behind Autosol metal polisher in term of cutting ability.

If pro product (Carpro/Meguair's/Osren) = 100%, Soft 99 Glass Compound Z is 70% and Autosol is 75 to 80%. All glass compound will contain Cerium Oxide, suspect Soft 99 contain it as it is orange in color but unable to find the spec of it.

leeweixian88, I don't have any recommendation for car detailing shop.

This post has been edited by mot88: Feb 11 2016, 07:50 PM

You may try toothpaste, try on small area, need some elbow grease.

Went to car saloon for windscreen treatment, tried WM removal and compound, the windscreen still the same. No improvement. The supervisor suspect the Rain X residues had etched the windscreen. Worst case scenario, change a new windscreen.

Can you snap a photo from the outside? As in the windscreen condition from the outside.

This post has been edited by Thrust: Feb 13 2016, 04:48 PM

From what I've experienced,
it's because you use the same towel/cloth to apply WM remover then cleaning the windscreen. it got worst for a while when you switch on the wiper right?

To repair this,
you will just have to polish the windscreen that is all

I had separated them - Using sponge for WM removal, wet cloth with running water to wipe it off. In fact, it works better in raining day. It formed a water film and the condition is not bad.

Tried to polish with compound, but looks like no improvement at all.

The dust stain and water stain are off from the windscreen. But, at a closer view, u will notice that the surface is not that even - like the surface of Moon. Suspect that the chemical had marred the windscreen.

The car saloon suspect the Rain X causing the problem as it is a strong chemical. I have a doubt on this as I have been using Rain X for years. The possibility might be the WM removal does not compatible with rain repellant.

Looks fine from the outside though.

The camera cannot capture the surface nicely.

leeweixian88, quite a number of ppl was like your predicament back years ago. I was digging up old posts where acid WM removal was the rave back then.

http://autoworld.com.my/forum/index.php?/t...ter-mark/page-4

Read through page 1 to page 3. The participants in this forum are individuals who are passionate with detailing
http://autoworld.com.my/forum/index.php?/t...dscreen-polish/

As elaborated, the blur/ white spot will clear in due time and just matter of time, in months , not years). Not sure what compound that the car saloon used but Meguiar's Professional line M105 (Meguair's Ultra Cut Compund) is one of the used and abrasive compound at that time. Now there is a new product M101 (Meguiar's Foam Cut Compund) which much more abrasive than M105. Professional line is usually used with machine, cannot unleash 100% of power if used by hand.

I m not sure if you are willing to spent more money to go to car saloon who use M105 or M101 for polish or seek the windscreen replacement route as discussed also in the above thread (2nd link).

If you choose to replace the windscreen, important point to, avoid driving the car if possible or else go slow on hump ,uneven surface during the glue curing process (up to 12 hours). Why? Coz, the windscreen is subject to vibration pending hardening of glue and any big impact will cause the siting of windscreen to shift a bit and gap.
If there is a gap, it you will hear a slight sound of wind coming in (when you off yr radio) when doing 110km/h and above.

I hope you would make a sound decision based on the above information.

I went through the post before. But, my case is different from what had mentioned. I got no haze effect on my windscreen. I think my windscreen is etched by the chemical. As mentioned in the post earlier, the surface likes Moon.

The car saloon had done some tests on the WM removal and rain repellent that I used and found out that the both chemicals are not compatible. Rinsing water is not sufficient to clear the WM removal. A car shampoo is needed. The WM removal residue is then mixed with rain repellant and etching the windscreen.

I am waiting the supplier of WM removal to provide a solution. Perhaps, they can help on this. Meanwhile, the car saloon also helping to figure out how to resolve this. They had tried polish with compound, but has no effect. No yet try the more abrasive compound, afraid it will scratch the windscreen.

I've used this Soft99 Glass Stain Cleaner to remove watermarks and 1 year old Ultra Glaco coating on my windscreens... Very good...

http://www.soft99.co.jp/english/products/c....html?pid=05066

You can also try Soft99 Glass Compound Z like what mot88 suggested... You can find it at Autobacs Klang or Eneos...

This post has been edited by blurjoey: Feb 15 2016, 11:17 AM

TS, it will get better over time. I was like you initially trying all sort of ways but eventually after few years, it seemed to have been better. I suspect the car washing and polishing of the glass once in a while removes it over time. Lately I'm using Rain X for the windscreen and it seems ok.

Since that day, i never used any watermark removal products.