"The claim "dermatologist recommended" is not a Canadian Dermatology Association statement, but rather a claim that is being made by the brand owner of the product. This kind of claim usually refers to a consulting or a company-employed dermatologist."
She also informed me that any time the phrase is used by the Canadian Dermatology Association (CDA) it will be accompanied by a seal. If there is no seal then it is not certified by the CDA. What I found most interesting about her reply is that the "claim usually refers to a consulting or company-employed dermatologist." So a dermatologist gets paid to recommend a product, doesn't seem very ethical to me.