Oxidizing agent activates the natural oxidization process of metals generating porosities and natural rust. Brass photoetches will improve the grip of paints.

Some natural rust could be toxic, it is recommended to varnish after oxidizing to seal the rust and avoid contact.

This effect will rust the pure metal pigments in metallic paints in a very natural way
(check your metallics use pure metal before using)

1x 17ml Oxidizer