If it's like water rings. Use a thin kitchen towel that is dry cover spot and iron over it with a hot iron. The ring will disappear. May take a fewtimes
If it is from water glasses then use mayonnaise. Let it sit for a little while then wipe dry. Buy pencils colors for wood. Match your wood color in and wipe dry. That is it.
If it's like water rings. Use a thin kitchen towel that is dry cover spot and iron over it with a hot iron. The ring will disappear. May take a fewtimes
If it is from water glasses then use mayonnaise. Let it sit for a little while then wipe dry. Buy pencils colors for wood. Match your wood color in and wipe dry. That is it.