A Few V Beam Bruises are still dark and visible after 7 weeks, is that something to be concerned about?

I had a V-Beam treatment done to remove broken blood vessels in the face. It's now been 7 weeks and there's still about 4 bruises visible from the treatment while most have faded. Some of the bruises will also get darker after appearing to be gone if the skin gets dry. Is this something that needs medical attention? The Dermatologist who performed the procedure as checked the bruises twice at 3 and then 6 weeks and determined there is no hyperpigmentation.