How to keep bumper plastic black ?

Grease it with oil, try olive oil, few costs to absorb then seal it with protectant.

 

3M Bondo Restore Black. Used it on my old truck once and got rid of it a little more than a year later. Never had to redo it. Kind of messy, so tape your paint off.

 

Once it fades no product will permanently restore it that I know of. 303 is short lived.

 

Well dang if it didn't work very well on my bumper ! Thanks fellas . I found the towelets at Autozone . Made a big difference in my bumper . I will use it on the flaps and interior after it gets a bath . MM

 

+2

 

the 303 washes off after a few washes, I use this https://www.amazon.com/Forever-Black-Bumper-Trim-Dye/dp/B000FOIJXQ

 

I learned about 303 on this forum, the stuff is amazing! I use it on everything plastic, or rubber. I also use it on my leather between meguires leather treatments. It is a little easier to work with. A little of it is way better than a lot for most applications. Too much, and it looks milky. Made my tonneau look brand new!