A BBL can sometimes be done after biopolymer removal, but fat survival depends heavily on the condition of the tissues after the foreign material is removed. The main reasons fat may not survive well are scar tissue, chronic inflammation, infection risk, poor blood supply, residual biopolymer, contour defects, or a space that was disrupted too much during removal. In many cases, it is safer to treat this as a staged problem: remove as much unsafe material as possible, allow the tissues to heal and soften, then reassess whether fat grafting is appropriate. Imaging, operative findings, skin quality, and donor fat availability all matter. If the area remains firm, inflamed, infected, or poorly vascularized, adding fat too soon may lead to poor take, lumps, oil cysts, or more irregularity.