Not certain about that BMW product, but the Mother's Back to Black product is not a dye. A dye will be the same color as the intended result, Back to Black is an opaque white.

What you're trying to do on your B&C pillars is stop and hopefully reverse oxidation. That's what Back to Black does. It's best on plastic, rubber or vinyl, and I can only confirm my good results using it on the exterior B&C pillars.

I agree with others here that a real good wash and wax is the first thing to try.

JV

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JV

What gets us into trouble is not what we don't know...it's what we know for sure that just ain't so