cross-posted from: https://lemmy.ca/post/54746362
I was burning a cone incense and left it on the sink, and this stain won’t come off. I tried baking soda, water, vinegar, hydrogen peroxide. I tried letting them sit for multiple interations, and it made no difference.
Try rubbing with mild abrasive such as toothpaste - it’ll take a while if it’s going to work though and you might be left with a dull spot.