Board certification is similar to an exam at the end of speciality training. In almost all countries throughout the world doctors have exams at the end of their residency training which guarantee that their training was appropriate. The purpose of such exams is to standardise training programs and set norms to ultimately elevate patient safety.
In cosmetic surgery there is an extra need of such certification due to the fact that there are no university training programs for cosmetic or aesthetic surgery. Training and education is acquired through a long process of visiting congresses, seminars, live-surgery hands-on workshops, and ultimately performing operations with a mentor.
An independent board should ultimately certify that this lengthy educational process meets up to international standards. This is not only in interest of patient safety but also in doctors' interest.