Breast lift incision separation; is it infected? (photos)

Thank you for your question and photos.  No online reviewer can diagnose or make treatment recommendations.  I'm sorry to see that the wound is opening up.  Signs of infection include increased pain, redness, drainage and odor.  Your surgeon will be the one to diagnose infection and to determine the appropriate course of action.  Many times wound care and time is all that is needed.  Once this has healed and the tissues matured (four to six months or longer) one could consider scar revision.  Until then keep in contact with your surgeon.  

Thanks for your post, and I'm sorry you are having problems. Though we don't like seeing a wound like this w/ some separation, particularly when an implant has been placed, I think does not look deep and will likely go onto heal on its own. You may need to have the final scar revised to make it look better once it's all settled down. Best wishes.