Is bruising after a BBL facial normal and if so, how long does it take to subside?

A variety of things can happen your skin after BBL treatments. This also depends on what you are having treated with BBL. It's common for swelling of the face or darkening of pigmented lesions to occur after a photo facial. The face can feel like it's sunburned for few days so it's important to stay out of the sun. Bruising however is not a common side effect. If the bruising is severe it can also be treated with BBL and I sometimes do that if there is some bruising at injection sites. Your provider should check your medication list to make sure that there's nothing that will make you more prone the bruising. Things it will make you more prone the bruising are usually aspirin and Plavix. If she continue to have BBL treatments it would be good to have a cold pack to put on your face afterwords. This can reduce the post procedural swelling and should decrease the bruising as well.

In my opinion you should not see bruising from a BBL treatment, it could actually be hyper- pigmentation or burns from incorrect treatment settings. When treating dark pigmented lesions with the BBL laser the laser light typically causes the spots to darken then flake off like a scab which can take 3-7 days.
Be sure that your skin type is correct and you are a candidate for BBL treatment.