Go to the article so you can see the details, but Mark Perry sums it up well at the end:
The competitive market for cosmetic procedures operates differently than the traditional market for health care in important and significant ways. Cosmetic procedures, unlike most medical services, are not usually covered by insurance. Patients paying 100% out-of-pocket for elective cosmetic procedures are cost-conscious, and have strong incentives to shop around and compare prices at the dozens of competing providers in any large city. Providers operate in a very competitive market with transparent pricing and therefore have incentives to provide cosmetic procedures at competitive prices. Those providers are also less burdened and encumbered by the bureaucratic paperwork that is typically involved with the provision of most standard medical care with third-party payments. Because of the price transparency and market competition that characterizes the market for cosmetic procedures, the prices of most cosmetic procedures have fallen in real terms since 1998, and some non-surgical procedures have even fallen in nominal dollars before adjusting for price changes. In all cases, cosmetic procedures have increased in price by far less than the 100.5% increase in the price of medical care services between 1998 and 2016 and the 176.6% increase in hospital services. In summary, the market for cosmetic surgery operates like other competitive markets with the same expected results: falling real prices over time for many cosmetic procedures.