Get Certified MK Professional Biotin Certification 03.01.2021 GET CERTIFIED! Want to become certified in MK Professional Biotin? It's as easy as 1, 2, 3: Watch the step-by-step video, complete the certification quiz, and send the quiz back to TruBeauty's education department! Step 1: Watch MK Professional Biotin's step-by-step video here: Step 2: Take the MK Professional Biotin Certification Quiz: Questions? Call (888) 371-5040 x101