I have a leather sneaker which I've put outside of my house for months. Then yesterday when I finally decided to wear it once more, I've noticed that the navy blue-dyed leather has somehow faded. At first I thought it's just dust and wiped the leather surface with wet wipes, but after the failed attempt, then I came to confirm that the leather has indeed faded.

Any ways to restore the leather sneakers?

inb4 TS lacks leather maintenance xp and still wanna buy dyed leather sneakers

To restore it, just get a dye.. A famous brand would be https://angelusdirect.com/

Most people restore their sneakers with this dye.. Can get guidance from youtubers

Cheers!