Hi guys, I got my first new car that is white.

Planning to buy and apply sealant on my car so that I don't need to wax it so frequently.

What are the average to good brand sealant and the cost? Also, can I apply it after I wash my car with Turtle Wax's car shampoo, without any polishing and so on?

Wash and clay the car as usual. Polishing can remove old wax from the car. Dispite the polish is a low abrasive chemical that strip off wax and smooth out the paint.
(Remember to apply the wax after polishing)

If you are not polishing the car. Use IPA to wipe the car or degreaser works well. Then only you apply a fresh layer of wax

You should do the inspection by lightly running you hands over the paint after washing the car (after rinse). You can more of less feel the areas needing attention. Normally the flat surfaces like hood, boot and roof need more frequent attention.

U should wash your car after claying. This will remove the QD & clay residue and enable your wax to adhere better.

Its fine to leave the QD at those parts. It'll come off during next wash.

Another tip is you can use your spray wax to protect the plastic and rubber parts.. this is for the meguiars ultimate spray wax/ xpress wax.
I even use  that spray wax for my windscreen and non porous interior surfaces. Quite versatile and safe for interior as its has low VOC.

Btw clay is for removing above surface contaminants. For below surface contaminants u need a polish like the meguiars ultimate polish. Unless your paint is already in good condition, you'll notice a difference post polish (for metallic paint, the metallic flakes will glitter more under light). Don't do the polishing often of course, but the abrasion of the clear coat is really minimal 

A compound has more or higher abbrasives.
Polish has lesser and smaller abbrasives.

Compound for serious defects.
- Scratches
- Oxidation

Polish for light defects.
- Light Swirls
- Watermarks

Agreed. Some have horrible pad conditions, some use 1 pad polish whole car without washing, some use just too little polish and zing past each area one time only. I even saw one holding down DA polisher until the pad stop spinning, machine overheat and stop working.

To be fair I dont blame them. The local detailing industry is about low price and fast delivery, so any place that ask to leave the car for 2-3 days u probably wouldnt go for.

It is advisable to DIY polish and wax my car myself?

Will be my first time doing such things and I have to say I'm moderately capable in DIY skills.

What are the estimated costs involved for all equipment and the creams?

Thanks sifu!

Im owning a white solid paint car and lately i noticed the color of the bumper and body is totally different. Bumper is white color where body is yellowish white.
Any idea or advice that polishing can improve the yellowish-white paint to whiter? or the only option is to respray?

[attachmentid=7962707]               

[attachmentid=7962708]

How much did it cost you for your rotary buffer? Those things seems expensive.

And by DIY ourselves, it is easy to screw up the paint job while polishing?