According to le Collège des médecins du Québec, before-and-after photos constitute testimonies of endorsement, and therefore are in violation of article 2.02.07 of the physician's code of ethics.

2.02.07 A physician may convey factual, exact and verifiable information through any public medium, provided that the information

1. contains no comparative or superlative statement regarding the quality of the products, professionals or services referred to in the information; and

2. contains no expression of support or gratitude concerning that physician or his/her professional practice.