Gently run your hand over an area before and after claying. You will probably, unless you car is really clean, feel little bumps. Most stuff you can't see, but you can feel, much is just grit stuck into the finish. The clay will remove it. Somewhere there is a test you put your hand in a baggie, it's supposed to magnify the feel.

The best example though, the wife's car got some kind of paint overspray. So fine you couldn't see it unless you looked close. I tried a number of things, nothing even bothered it. A slow and careful rubbing with clay, and it is gone. What a job though.

Also really good for those scuffs, or marks that don't wash or rub off.

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KLK, MCSE

1990 500SL

I was always taught to respect my elders.
I don't have to respect too many people anymore.