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.

  • Telex@sopuli.xyz
    2·
    2 months ago

    Your nice list doesn’t seem to have non polar solvents in case it’s greasy. Something like soap, alcohol, (turpentine, acetone, xylene).

    But yeah, might not be a surface stain as the other comments suggest.