I agree with your use of arnica montana, which will speed the resolution of your bruising. I would keep your head elevated (sleep with an extra pillow) and avoid strenuous athletic activities. Beyond this and possible laser, I think this is just a matter of time and patience.
Remember that the effects of Perlane and most injectable fillers, good or bad, are temporary--and so is your bruising.
Bruising is common after fillers and it can be worse from one side to the other too. Taking Arnica and applying it topically can help. I have often done Laser Genesis on people who have bruising from anything, and that helps a great deal. If you don't want to do lasers, then I think what you are already doing is what I'd recommend. A good cover-up makeup like Dermablend is a good solution too!
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