What is in shoe stretching solution?

Question:please list ingredients. Thanks!

Answers:
If you want to go for an easy option - every shoe store or shoe repair shop sells shoe streatching foam. It really works.
If you want a home-made solution - then wet the shoes inside, (could use little bit of vinegar, but not the brown coloured - may stain the shoes), then find and put on thickest socks (or put several socks on at the same time) - wear the shoes for at least 2 hours while at home (try to walk around, don't just sit in them). This will do the trick.