basic alcohol-based leather dye. If you ever take something in to be dyed, this is what they will use - industry standard, I guess you would say. I don't know whats in the products labeled 'sole edge dressing', but my guess is it's just polish because it doesn't seem to work too well. Remember, sole edges are veg tanned, so they don't polish so well - they need to be dyed every so often. The only problem is don't make a mistake - but it's really not hard to do. It comes with a dauber and wear some gloves. I have most of the colors and use it on every pair that my customers want cleaned up. Funny story though...new salesmen comes in and decides that he should polish up his shoes. So he goes to my bench and takes a rag and dips it into the jar (I keep the basic black and brown in old mayo jars, not marked) and wipes it on his shoes like polish. He thought I had some special polish or something...he gets dye on his shoes in streaks, his clothes, hands, everywhere. Clothing salesmen, go figure. Don't do this, just the edges.