Tar and Iron X on Black Car

[Arie Zhai]

Hello, just some quick question. My car is black, How do you guys notice tar spot on black car? Also, can I notice chemical reaction when I use Iron-X for decontamination? Thanks anyway

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[parshooter]

You'll notice tar, or any other type of debris, because it will stick out from the paint/body. It'll probably be a different shade of color also.

[Crispy]

Do the baggy test.

Then Iron X.

Baggy test.

Tar remover.

Baggy test.

[LydiaGP]

If you're washing the vehicle on a light-colored substrate like concrete, you'll see the purple from the IronX.