I’ve tried scrubbing it several times with bar keepers friend soft cleanser and although it improves, it never goes away completely and it always comes back.
I’ve tried scrubbing it several times with bar keepers friend soft cleanser and although it improves, it never goes away completely and it always comes back.
Bar Keeper’s friend will get that out, I use it when things get especially grimy. I’ve used it on a similar tub before that was pretty gnarly with discoloration worse than that.
It is very abrasive though, be careful not to scrub so hard you damage it.