Rahul

So what should I do to fix this. Should I look for a similar paint and paint over or is there a reversal method?

Hi there I used the PVCu solvent cleaner on my door and whilst I cleaned the whole door on this spot it started to vanish and the grey colour of the door turned fully white. I tried to cover it for now by colouring it in a black marker pen. I’ve attached a picture of the cleaner and the damage it’s done. Can anyone suggest a way to undo the damage and what was the cause because the rest of the door is basically fine.