the yellowish level started to blur out the front light brightness.
will snap 1 later the pictures and yesterday i only used those headlamp polisher rm20 a bottle bought from carrefour last time but it wont last

First and foremost, again, MAINTENANCE.
After you apply wax/sealant, maintain the upkeep with regular wash, at least once a week if possible. Spray waxes/sealants (eg. DG Aquawax, Optimum Car Wax, Sonax Brilliat Shine, Dodo Juice Red Mist, Mothers Spray Wax, 3M Quick Wax Spray, etc.) would prolong the need to re-wax/re-seal if used after a couple of washes. Most importantly, they are very convenient to use and it would take only about 5min ~ 10min to apply. When I was using these combo, I only needed to re-apply 'proper' wax/sealant around every 4 months ~ 6 months or so, depending on the weather conditions and mileage. So, if you adhere to a proper maintenance regime, the annual polish/wax as 'recommended' my most automotive supplier *could* apply. If not, you'd most probably need to re-do monthly or bi-monthly, depending on the products used (provided that it's done properly). Complicated? A little....yeah. But to put simply, if you see the beading or sheeting of water aren't to your liking anymore, or when you see black/dirt streaks or stain not coming off after a wash, signs are the paint is in need of a fresh layer of protection.
Without any details of what product, tools, method, etc. you're planning on using, I can only suggest one thing - PATIENCE. DO NOT RUSH and make sure you allow ample time to finish the whole process. Good luck and have fun ya.
I have to admit I'm an avid fan of Meguiars when it come to polishes. Though I've tried quite a few other brands, Megs' polishes are ones that can always be trusted and worked *almost* every time when it's used for its intended purposes. Most of other brands are hit-and-miss for me. It could well be due to the fact that I'm kinda used to them and their workings but, if anything, Megs would be a good starting point to get to know about detailing.

Oh....and the 'looks great' is more like 70% skills/techniques and 30% product....just in case some products didn't work as expected/marketed....

Bro,

Share some pics and share with us ur happiness and satisfaction

Looks great! Did you use IPA or panel wipe after you polish your car? Or you just wax the car with Collinite #476 after polish?

Also, how's Osren 2.4? Thinking to buy this product too haha.

Nice bro...how many hours uve spent to detail the whole car by hand? U did it in 1 day ke?

Great stuff and quick economy if you getting the gallon version. For your glass/paintwork...i would suggest instead of keep cleaning, polishing (cutting), reapply product...why not do a layer of coating and maintain easier from there on...

I presume you don't have much weekend free time to spend on the car ?

jyan are ur paint looks similar to this? =P