Accidentally coloured my entire skin yellow

So I (18F) tried a homemade vitamin C serum. I have a few scars(from acne mostly) so I made it for my face. However, I made too much and decided 'fuck it, It's good for you I'll do my whole body'

I accidentally left it on the entire day. It oxidised, turned yellow. I am very pale, so the yellow actually dyed my skin and it was patchy too, like a bad lemon coloured tan. I can't get it off and now I look like I have jaundice.

Don't use homemade vitamin c serum, especially not for longer periods of time.