Konstantinos Anastassakis MD, Ph.D. is Head & Neck Surgeon and Hair Transplant Surgeon, in Athens, Greece. Dr Anastassakis gained his medical degree from the Medical School of Semmelweis University of Budapest and finished his Head & Neck Surgery residency in the Athens General Hospital ＂G. Genimatas＂. This was followed by a fellowship in Facial & Rhinoplastic Surgery in the Universitätsklinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie, Ulm, Germany. He earned his Ph.D. from the Democritus University of Thrace, Greece, in 2010. Being among the few hair restoration surgeons awarded the ＂Experience Route＂ accreditation of the American Board of Hair Restoration Surgery (ABHRS), the only certifying organization for hair transplant doctors worldwide. He sits as a member of the ABHRS oral examination board since 2016, he was elected to the ABHRS Board of Directors in 2018, then Treasurer in 2020, and Secretary in 2021. Dr. Anastassakis is a full member of the ISHRS (International Society of Hair Restoration Surgery) since 2009 and has been a keynote speaker, instructor, and chair in multiple ISHRS meetings. Since 2019 he is one of the 120 distinguished Fellow Members of the ISHRS, as well as the founder and President of the HAHRS, the Hellenic Academy of Hair Restoration Surgery. Dr. Anastassakis is also the author of the 891 page worth medical textbook ＂Androgenetic Alopecia, from A to Z＂ published in the Greek language in 2015, a handbook covering pathophysiology, drugs, supplements, lasers, surgical hair restoration, wigs, and hair care, summing up the latest knowledge on Androgenetic Alopecia. The felt need for better informed care also lead to building a Youtube channel with more than 250 videos on hair loss and hair restoration, that reached over 10 million views; for that endeavor Dr Anastassakis was awarded medical influencer in 2021.