The Magic of Polishing Compound
I had washed this bumper with soap and water multiple times over the last few months and that texture had never come off. I thought I was stuck with it or would have to get a new bumper. I tried Turtle Wax Polishing Compound and it completely removed the texture. I just used a paper shop towel and polished it by hand for a few seconds. Time to go over the rest of both bumpers now.