Good luck finding something that lasts beyond a month, I tried a lot of them without success. Mine were all gray so I prepped them good and used Dupi Color Trim and bumper paint. After a year they are still black.
Ah good find, I had forgotten about that thread as well. Wonder how that will work out for a long term fix. It certainly was a great idea and worked out well from what I saw.
I never heard that, water based products dry out. In the end all black will fade if not taken care of. I liked the Turtle wax because it absorbed into the plastic and left a natural new appearance. On my truck I'm not that worried since it is in a garage now.Be careful what you apply to your plastics. Anything silicone based may temporarily bring back a deep black shine, but long term it’s compounding the problem, as it dries out the plastic.