Originally Posted by Jimmie
I've used both and consider both excellent. However they are totally different products IMO. Back to Black is a trim protectant that can bring trim back to a new look if it's not too faded or neglected. Forever Black is a dye product that can restore the worst looking trim (I used it on some that I thought "no way"and it looked new afterwards). A number of coats of Back to Black is what I would try first.
Yes, I muddied the waters of my own thread, when I inserted the Mother's product (Back to Black) in my title line. The two products which seemed the most similar were the Black Again and Forever Black, both being silicone-free based polymer products. I do understand the dye factor in Forever Black.
For additional reference, I have already tried several products on this bumper including: PB's Trim Restore, Meguiar's #40, AS's Super Shine, and probably several others that I can't recall as I type.