What a strange thread. Thank you for the clarification Fenix. Dermatology actually ranks #1 in terms of competitiveness, even above all sorts of surgical specialties. I shudder at how many people might have read this thread and will now think their doctor is incompetent (derm, family practitioner, allergist whatever)even before experiencing their skill.
Back to the main topic, I haven’t read the whole paper but if you read the abstract, the conclusion says: “The efficacy and safety of combined 5% minoxidil and 0.01% tretinoin once-daily therapy appear to be equivalent to those of conventional 5% minoxidil twice-daily therapy for the treatment of AGA.”
From the same abstract, the basis of this study is this idea: “Tretinoin is known to increase the percutaneous absorption of minoxidil and, therefore, to enhance the response of AGA to minoxidil.”