I spent last weekend having a marathon unfucking of the bathroom. I seriously spent over an hour just scrubbing the vinyl flooring and would you believe it turns out it was white? I honestly thought it would be buff-coloured, but it really was all just dirt. Too bad I don't have before and after pictures. Anyway, now that the floor's cleaner, the remaining stains really stand out. I think mostly it's hair dye, and some of it's probably been there for years. What can I do, besides scrub harder?
If that doesn’t work, try rubbing alcohol or Comet. Not at the same time.