Thank you so much, this tip saved my skin. I got some water rings on some of my mum's furniture and she's told me about it beorfe, this pretty much got them out. The two biggest ones are still slightly there, but hopefully she won't spot them!I didn't leave it on over night just an hour or so and i just used mayonaise as i didn't have any cig ash to hand. I'll wait till mum is out at work and try again with the ash lol.Cheers.