I didn't like how the back shiny plastic trim pieces on the interior looked like after the previous owners used all sort of chemicals on them. I tried all kinds of cleaners to get it to look matte black, but none worked. People say 303 leaves a matte finish. It looks too shiny and slick for me.
I then tried Mr Clean Magic Eraser.
What a difference! All the plastic bits, looked completely matte, fresh and looking just like new! It's been over a year since I did this and they still look great. I used it on the dash and doors (they're covered with vinyl) and it helps too, but not as much. You can use it on leather, but be super careful. If done too hard it will rub the dye right off and your screwed.
I then tried Mr Clean Magic Eraser.
What a difference! All the plastic bits, looked completely matte, fresh and looking just like new! It's been over a year since I did this and they still look great. I used it on the dash and doors (they're covered with vinyl) and it helps too, but not as much. You can use it on leather, but be super careful. If done too hard it will rub the dye right off and your screwed.