Allow me to answer your question as best i can based upon your photos. However, please keep in mind that an in-person, or at least a virtual, consultation with physical exam is first necessary before any legitimate evaluation or final surgical recommendations can be made. Unfortunately, anything minimally invasive, or in the form of revision BBL, will not be effective. The only thing that can raise up the lower side infragluteal fold is a lower butt tuck. A lower buttock tuck is kind of like a tummy tuck for the buttock in that it removes the banana rolls and/or loose sagging skin from not only the lower buttock but also the back of the thigh to tighten both areas and create a more defined buttock crease. In doing so it also aesthetically shortens and/or rounds out the buttock cheek. It is ideal for those patients that have had significant weight loss or fluctuations, changes from fillers injected, banana rolls, banana roll liposuction complications, multiple pregnancies, or who’s derrieres have succumb to the dreaded effects of gravity and aging. It is also effective for those whom feel their buttock cheek is naturally too long or square and just want it proportionately shortened and rounded, respectively. Like a well done tummy tuck, the 3-dimensional planning and surgical technique is key. It is best done under general anesthesia while the patient is in the prone (i.e. face down) position. The loose and/or elongated lower buttock and upper thigh skin, subcutaneous fat, and connective tissue are all excised. The fascial edges are brought together with deep stitches secured to the gluteus muscles effectively lifting the back of the thighs at the same time. Nonresorbable/permanent stitches are used here to best define the new lower buttock crease position and help defy the effects of gravity over time. The more superficial layers and skin stitches are absorbable to avoid palpability and the nuisance of removal later on. The resultant scar is strategically placed within the junction of where the buttock cheek meets the thighs. In many patients this scar is well worth the improved buttock/thigh contour. Please note, because an extremely few number of board certified plastic surgeons specialize in lower buttock tucks, you may have to travel away from your local area to seek consultation with this particular type of surgeon. Glad to help.