Used some IronX for the first time today. The wheels on my grand Cherokee are heavily coated in brake dust, the inside is seriously baked on too but ironx makes light work of getting rid of the brake dust.

The iron x when sprayed on turns blood red when loosening and dissolving iron particles.

Best effect is to clean your wheels as normal then spray iron x on and see that what is missed.

Its also safe to use on paint work after claying to remove the unseen paint containments.

No photos i'm afraid but Google is your friend, well worth purchase.