Removing a White Water Mark on Furniture

Try a dab of Mayo, rub in with a soft cloth and buff with a dry cloth. It did a great job on my old sewing machine. GG Vi

Depends on what the fabric type is on your furniture.

Formby's product line of furniture refinishing products sells a product called,"White Ring Remover". That is sold in any paint department that carries the Formby's product line.
You can also use some Vaseline Petroleum Jelly and ashes from a cigarette or wood ashes from a fireplace. The ashes are a very,very fine abraisive and the petroleum is a wood conditioner. Put some over the ring, using your finger rub well into the ring. Let set about fifteen mins. then wipe off.
Either one will take the ring out .

If I'm not mistaken you can crack a walnut and rub it on the spot. The oil in the nut helps to remove the mark!