Decontamination removes what washing cannot: embedded iron from brake dust, tar, tree sap, and industrial fallout. It is chemical first, mechanical second — iron remover and tar remover before clay, always, because clay dragged over bonded contamination marrs the paint.
You will know it is needed by feel. Put a thin bag over your hand and run it across a washed panel; if it is not glass-smooth, the paint is contaminated. Do this before every correction and before every coating. A coating applied over contamination seals it in for three years.
Decontamination removes what washing cannot: embedded iron from brake dust, tar, tree sap, and industrial fallout. It is chemical first, mechanical second — iron remover and tar remover before clay, always, because clay dragged over bonded contamination marrs the paint.
You will know it is needed by feel. Put a thin bag over your hand and run it across a washed panel; if it is not glass-smooth, the paint is contaminated. Do this before every correction and before every coating. A coating applied over contamination seals it in for three years.
