It’s been dubbed the “natural boob job,” “implant-free breast augmentation,” and “minimally invasive breast enhancement”—names ripe with modern-day appeal, aiming to encapsulate what’s medically known as fat transfer to the breast. But the growing interest in this surgical procedure—and, make no mistake, it is a surgical procedure—is being propelled by more than just clever marketing.

Not every surgeon is a fan of adding fat to the breasts, however, and not every patient is a candidate. Moreover, the procedure comes with its own set of risks and limitations. Ahead, we answer your most pressing questions about creating cleavage, enhancing lifts, and rebuilding and revising breasts with fat.