I had my nasofabial folds injected with fillers one whole year ago, i bruised heavily, a month later i noticed that the bruises did not completely disappear but left a bluish trace that looks like a light moustache in the area above the mouth .. it is devastating to look in the mirror, could it be the Tyndall effect? can it resolve with more time? how much longer? could it be permanent? can whitening creams help a bit in this case??