Start with 3M micro polish first and see how it cleans up. It is fine and may not hurt the stripes. It may take some work being fine polish but it is easier to control.
Guessing that bumper was resprayed with paint that is not holding up as well as the paint on the hood. Probably not enough paint there to sand to good pigment. Gonna need a respray.
The fascia was not repainted. It's what happens to straight reds when applied to rubbers and sometimes other body panels when left out to bake in the sun. Toyota reds of the 80's and 90's were notorious for it.
Wet sanding will not work as the pigments in the color are bleached out by the sun. As I mentioned prior, buff with a series of 3M compounds, paste wax, and hope you get back as much of the color as you can. I have been doing this for about 45 years.
This is the best stuff on the planet. You won't believe the difference. Meguire is all I will use now. I live in CO with ultra high UV, and this stuff brings everything back. I even use the wax on my granite counters to remove water stains and seal them.
My burgundy 87 GT had issue with clear coat fading from Day one. In the past 33 years of ownership I have had portions repainted as needed by at least four different shops. The saving grace has been that all the different shops were able to match the paint. One big reason to keep to a stock color.
I echo Thunder here. A series of polish may help or it will resolve that it can not be saved.
I used to care for a Corvette Pace Car that the bumpers and rear spoiler would fog up and fade even with less than 5,000 miles. The polishes would restore it and help keep it good.
I have seen horrible paint restored by polishes and oils that help take dry damaged paint to a good shine again. It is not always a sure thing but you have nothing to loose in trying.
Also use a good orbital buffer with a medium foam pad if you are not proficient with a normal buffer. It will do much more work than by hand and it is generally safe for inexperienced buffers.
There is a better chance of smoking the stripe off with a foam pad than a wool one. Foam generates more heat.
If I was doing the job I'd take Easy-Off Oven Cleaner, remove the stripe, buff it and have it re-striped. Stripers around here will do that job for $20.00 - $30.00.
Not worth jerking around with it for a few bucks. The end result might require re-striping anyway.
