I had a session of ipl yesterday. I had ipl sessions before and they were always turned up fine. However with this last one, I notice that one darkened area (blueish color) that is in the shape of the ipl bar. The superficial skin is intact and it feel like normal skin. No pain or burning sensation. I have only one area and i treated my whole face. Is this area burned or bruised? I read that one can get bruised during ipl session. If this is burn, is it permanent?