A med spa is, financially, an unusual kind of store: it sells services delivered from small, individually expensive vials, in a fast clinical workflow, in a cash environment, with very little friction between the product and the patient. Every one of those traits is a virtue clinically and a vulnerability financially, because a vial of toxin is small, valuable, and easy to mis-record — three qualities that describe both your best product and your biggest unguarded leak. Product walks out of med spas constantly in ways that never once register as theft, and getting that leak under control is one of the cleanest margin recoveries available to an owner.

What shrinkage actually is