It is also known as “partial subfascial, partial submuscular” breast augmentation and is a more complicated subfascial placement procedure. It is ideal only for patients who meet specific requirements. It is called “partial subfascial, partial submuscular” because the lateral two-thirds of the implant near the outer rim is placed under the fascial tissue layer, whereas the medial one-third near the cleavage or lower half of the breast is placed in or under the pectoralis major muscle. The purpose is to utilize partial muscle coverage to increase the thickness of the thin skin near the cleavage, completely enveloping implants near the midline with soft tissues. This not only reduces the chance of visible or palpable implant rippling but also creates a deeper cleavage. This method also extends the benefit of painless subfascial placement to those with thin skin or breast tissue who no longer have to go through the traditional submuscular placement, which is more painful and harder to maintain. Moreover, it could create a deeper V-shaped cleavage, add more elasticity to the area of subfascial placement, and incorporate the advantages of submuscular placement. However, this approach may be limited by patients’ objective conditions, and the implant size should not be too large to avoid an unnatural ball-like appearance or touch. In addition, this procedure is more complicated and time consuming. It requires surgeons to be more experienced in operating an endoscope and requires higher technical expertise than other breast augmentation procedures.