What's causing bruising from filler after 4 months? (Photo)

Hi - we have learned that when bruising is still present months after injections, it's no longer a bruise at all. It is post inflammatory hyperpigmentation. This is most likely to occur in mixed race patients in my experience. It is best treated with skin-lightening treatments such as topical medications, chemical peels, and broad band light. I hope this helps. Dr. Brown