Just that really. I have a nice big bag (from New Look) made of something that looks fairly convincingly like leather, but isn't. I usually go for real leather but this was an unusual colour that I really like. I've had it about 10 years and it has a few small scuff marks. If it was leather I would probably be trying to find out if anyone does shoe polish in that colour, but it's not going to work so well on a man-made material, is it? Do I just accept that this bag has had its day, or is there anything else I might not have thought of?