You just walked out of the local mega-mart, bags in hand, and noticed that something was wrong with your car. It looks scratched! After close inspection, you see that the mark isn't rubbing off and that your new car is now scratched. What to do - get out the touch-up paint?

ABSOLUTELY NOT! Touch-up paint is one of the worst things you can do.

10% of the time, touch-up paint is the right way to fix a scratch. If the scratch is large, if bare metal is showing, and if the scratch is a circular area the size of a fingernail, touch-up paint is the way to go. But I don't think anyone who isn't a pro should use touch-up. It's hard to apply, and most of the time it's overkill.

The best way to fix a light scratch is called "wet sanding". Essentially, a paint pro will do an EXTREMELY light sanding on the scratch which will reorganize the paint/clear-coat molecules and make the scratch "disappear" — provided of course the scratch isn't too big or too deep.

You can find out if your new scratch is big or deep with a couple of simple tests. When you gently pass your fingernail over the scratch, can you feel a bump? Does the scratch stretch over the entire length of the vehicle or of an individual body panel? If the answer to either of those questions is "yes", then you need to see a body shop and you may need to call the insurance company. Big or deep scratches can be expensive to fix, but not always. Make sure to check around.

If the answer to both of the questions above is "no", then you've got a light scratch in your new car and fixing it is easy. Go to a local body shop, preferable one with a written guarantee, and ask them for an estimate. Expect to pay around $40.

One last thing - these are only methods to reduce or diminish a scratch, not to truly repair it. A true repair would involve a new paint job for the scratched panel and paint blending for the nearby panels, and I think that's a terrible idea to fix a light or even heavy scratch. It's better to fix these things inexpensively - they're just going to happen again. Just remember, the scratch isn't going to miraculously disappear. It will look a LOT better though.