Damaged skin from peeling oil

I used some peeling oil to remove my dark knuckles. I used it 3 times for a couple weeks each. The reason why I refused it is because my knuckles were re-darkening. Now it looks like I damaged my skin and it's ugly. I am getting married in a month. I don't know what to do. Can my skin get its normal color again?
How? All I'm doing now is applying Vaseline or my normal skin moisturizer.

I regret using peeling oil!