Caring for your WildBunnyArts products is really easy. Just wear them and enjoy yourself!
The art lasts longer than the shoes . I have put my trainers in a hot wash but really, all you need is a gentle wipe every now and again. If you want something that will keep your shoes fresh and waterproofed, this stuff is the bomb: https://www.sneakerscience.co.uk/sneakers-er-superhydrophobic-protecter-spray-75ml-3292-p.asp
They also sell great clean and care kits.
The designs will last as long as the item does. Wash in your usual 40 degree wash.
If I have printed white on black, I use waterbased discharge ink. This will change over time. First it changes into a crumbly retro looking design. Eventually it may all fall off to reveal a bleached design underneath.