How To Treat Black Spots On Face?

I have a 1cm Diameter wide, redish graze on my face, (between mouth and lower right cheek) , Im really worried it will take a long time to return to its natural skin colour, so far ive been applying vitamin E oil but is there anything else I can do ?? I just dont want this dragging on for months as its painfull to look at in the mirror. It's already healed up, its even with my skin, just really red and quite noticeable(im asian skin coloured-tan).