Unisex-Adult Scout Boot Stretch Spray

Do you have to spray every time before wearing your shoes/boots? Or does it stay flexed out?

I plan on wearing a new pair of boots for my wedding. I bought them 1/2 size bigger. Will they stretch enough in 7 wks?

Can this be used with pig leather According to the instructions?

Is it water resistant or help prevent water/salt marks during winter months?