@mukeshus:
Nothing great will be achieved if you do the so-called "teflon" coatings from any tom,dick and harry shops.But-a BIG But here-a proper wax job definitely protects your paint from the environmental hazards like bird poop(highly acidic),UV rays and other environmental pollutants which actually "eat" into your paint.The wax will act as a barrier and take all the beating from these hazards, keeping your paint in better shape than what it would have been if left alone to face them.Scratches may also come, but they will be on your wax, and not on your paints clear-coat.Buy a good quality wax, and treat your car by waxing it every 2-3months(depends on how durable your wax is), she deserves this care..And you will see that your car will look as good as new and smile at you even after years..
You dont need to go to any body shop to do it..If you really love your car, do some research on the internet and start doing it all yourself.Its not rocket-science, and you will be amazed at the satisfaction that you will get after every detailing session with your car.