Masahisa Nagai, M.D.

  • Fellow member, International Society of Hair Restoration Surgery (ISHRS)
  • Specialist and examiner, American Board of Hair Restoration Surgeons (ABHRS)
  • Director, Japan Society of Clinical Hair Restoration (JSCHR)
  • Member, Japan Society of Plastic and Reconstructive Surgery (JSPRS)

Born in 1965 (Kagoshima, Japan), Dr. Nagai is a hair loss patient himself. Suffering from AGA starting at the early age of 18 inspired him to study the disease to become one of the world`s leading experts. Having performed well over 4,000 hair transplant surgeries with more than 28 years of experience under his belt, Dr. Nagai is a renowned board certified hair transplant surgeon.  

Since no treatment was available at the time, his AGA progressed until it reached an extensive N&H scale of 6!

However, after undergoing 3 FUT transplants at the age of 33 and taking hair loss medications, his recovery and outcome is astounding. The pictures speak for themselves. They are of Dr. Nagai at age 33 prior to FUT transplants and recently at age 55.

Dr. Masahisa Nagai is one of the pioneers of the hair transplant surgery with more than 25 years of experience.
Dr. Nagai AGA progressed to an H&N scale of VI before he underwent hair transplant surgery.

After spending years performing operations and perfecting his method, Dr. Nagai is still is passionate about hair restoration and strives for perfection. He shares his findings and his superior techniques with other aspiring surgeons who share his passion.

Carrier

 

Dr. Nagai started his carrier as a hair transplant surgeon using the Choi implanter. The Choi implanter used the hole slit method where a small hole is punctured into the skin and the hairs are transplanted. While this method was easier to perform for the surgeon and reduced the operation time, the outcome was adequate yet not perfect.

However, 3 years later he attended a lecture conducted by Dr. Ron Shapiro and after watching his superior technique, Dr. Nagai decided to join Dr. Shapiro and study his technique.

Dr. Nagai improved upon the technique and in 2005 he presented his groundbreaking work on eyebrow and eyelash hair restoration at the International Hair Restoration Society in Italy. This was a world`s first for which he received the coveted Modena Award making Dr. Nagai a pioneer of the eyebrow an eyelash transplantation.

Later in 2007, he served as the president of Japanese Hair Restoration Society while he received the American Board of Hair Restoration Surgery (ABHRS) diploma.

In 2014 he decided to put his technique into writing by contributing to 3 chapters of the textbook “Hair transplantation 5th edition”.

10 years later he developed and trade marked The Nagai Line-Slit Method ,the result of his years of experience in hair transplant surgery.

The Nagai Line-Slit Method is a superior hair transplant technique which leads to a more precise and natural looking hairline while increasing the transplanted hair survival rate.

Dr. Masahisa Nagai is one of the pioneers of the hair transplant surgery with more than 25 years of experience.
Dr. Ron Shapiro is a world-class hair transplant surgeon and Dr. Nagai's mentor.

Dr. Ron Shapiro

Dr. Ron Shapiro is a world-class hair transplant surgeon and Dr. Nagai’s mentor. He is one of the authors of the “Hair Transplant Surgery”, which is the go to textbook for hair transplant surgeons around the world.

Dr. Ron Shapiro is a world-class hair transplant surgeon and Dr. Nagai's mentor.

Dr. Timothy Carman

Dr. Timothy Carman is one of Dr. Nagai`s closest hair transplant colleagues and is the 2022 President of the ABHRS (American Board of Hair Restoration Surgery).
He is well known for his unique asymmetrical hairline design, following the impression of a natural hairline, giving it an indistinguishable natural look which has also inspired Dr. Nagai.
His talents doesn’t end there, he is also a painter, musician and racer just to name a few.

Dr. Glenn Charles is a member of the American Board of Hair Restoration Surgeons, a specialist and examiner.

Dr. Glenn Charles

Dr. Glenn Charles is a member of the American Board of Hair Restoration Surgeons, a specialist and examiner. He is a colleague and a friend of Dr. Nagai who strives to advance hair transplant technology around the world.
“I have great respect for Dr. Nagai’s passion for perfection and desire to achieve satisfactory results for patients.”

The Nagai Line-Slit Method Key Aspects

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Optimized donor hair extraction based on donor area size and follicular unit density estimation

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Reduced FUSS scarring through improved two stage incision and closure

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Reduced prepared graft size, allowing for a more precise linear slit transplantation

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Unique slit incision, mirroring the surrounding hairs leading to a natural looking hairline

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Ability to use both hands (ambidextrous) leading to a more streamlined process

The Nagai Line-Slit Method Key Aspects

j

Optimized donor hair extraction based on donor area size and follicular unit density estimation

j

Reduced FUSS scarring through improved two stage incision and closure

j

Reduced prepared graft size, allowing for a more precise linear slit transplantation

j

Unique slit incision, mirroring the surrounding hair leading to a natural looking hairline

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Ability to use both hands (ambidextrous) leading to a more streamlined process

Books

“Practical Hair Restoration”, 2019.

“Latest Hair Restoration Strategy”, KHRS hair transplantation forum, 2018.

“Four Processes of Hair Transplantation and Tips for Raising the Survival Rate”, 2018.

“Advance Hair Transplantation”, 2015.

“Methods and Indications for Hair Transplantation, New Strategies for the Treatment of Alopecia”, 2011.

“Donor Harvesting with Doppler Guidance”, Hair transplantation 5th edition, 2010.

“Difficulty of Body Hair Transplantation”, Hair transplant forum of ISHRS, 2007.

TV Appearances 

Honma Dekka TV by FujiTV, 2023.

Honma Dekka TV by FujiTV, 2022.

Honma Dekka TV by FujiTV, 2021.

Itosino Tikyu hour by NHK,2021.

Honma Dekka TV by FujiTV, 2020.

Chirachira Panchi by TVQ, 2018.

7jini Aimashiyou by TBS, 2016.

Denpano kamisama by Asahi Television, 2015.

Watashino Naniga Ikenaino by TBS, 2014.

Momochihama Store by TNC broadcasting, 2010.

Lectures

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Invited speaker, The 46th Annual Meeting of the Japanese Society of Cosmetic Surgery, Japan, 2023.

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“Importance of single hair transplantation at the hairline, and the study of the transplanted hairs on Dr. Nagai`s arm and the great risk of having a symmetrical design”, invited special lecturer, Korean Hair Society (KALDAT), South Korea, 2023.

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“Educating surgeons on world class hair transplantation techniques”, Japan society of Aesthetic Dermatology Based on the Nagai method of hair transplantation, Japan, 2022.

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“Recent developments of the superior hair transplantation technique”, Japan society of Aesthetic Dermatology, Japan, 2021.

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“Nagai method of two steps incision and suture”, Invited lecturer, Japan Society of Clinical Hair Restoration, Japan, 2020.

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“Details of Nagai Style Hair Transplantation”, Invited special lecturer, Chinese Hair Society, China, 2019.

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“Nagai Style Hair Transplantation That Made Full Use of Digitization and Standardization”, Invited lecturer, Korean Hair Society (KALDAT), South Korea, 2018.

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“Hair Transplant Surgery from FUSS to FUE”, Invited lecturer, Chinese Hair Society, China, 2018.

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“All Nagai-Style Hair Transplants That Produce Stable and Successful Results”, Invited Lecturer, Taiwan hair society, Taiwan, 2018.

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“Nagai Method State of Art Hair Surgery”, Invited Lecturer, World Congress for Hair Restoration (WCHR), 2017.

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“Regenera for Hair Regrowth Treatment”, Invited lecturer, Italian Hair Science Society (ISITRI), Italy, 2017.

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“Precise and Correct Way for Hair Restoration”, Invited speaker, Korean Society of Cosmetic and Hair Surgery, South Korea, 2017.

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“Combination Procedure ARTAS and FUE by Hand”, Invited lecturer, ARTAS certified surgeons meeting, 2016.

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“Lecture on Actual Hair Transplantation”, Invited speaker, Japan Society for Clinical Hair Restoration (JSCHR), Japan, 2015.

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“Precise Hair Transplantation Using Both Hands”, Invited speaker, International Society of Hair Restoration Surgery (ISHRS), 2015.

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“The Latest Nagai Method Hair Transplant”, Invited speaker, Japan Society for Cosmetic Surgery (JSCS), Japan, 2015.

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“History of Hair Surgery Past and Present”, Invited lecturer, South Korean Hair Society (KSHRS), South Korea, 2015.

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“Hair Restoration with Robot Assistance”, Invited lecturer, International Society of Hair Restoration Surgery (ISHRS), Brazil, 2015.

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“Cutting Edge of Hair Restoration”, Invited lecturer, World Congress for Hair Research (WCHR), South Korea, 2014.

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“From Hair Transplantation to Hair Restoration”, Invited lecturer, Symposium
of the Japan Society of Plastic and Reconstructive Surgery (JSPRS), Japan, 2014.

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Lecturer at the most advanced hair transplant workshop, Japan Society for Clinical Hair Restoration (JSCHR), Japan, 2013.

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“State of Art Hair Transplant Surgery”, Invited speaker, Japan Society of Plastic and Reconstructive Surgery (JSPRS), Japan, 2011.

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“Nagai Hair Transplantation”, Invited lecture, Japan Society for Aesthetic Surgery, Japan, 2009.

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“Difficulties of Body Hair Transplantation”, Invited speaker, International Society of hair restoration surgery (ISHRS), USA, 2007.

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“Formation of Natural Hairline”, Invited speaker, Japan Society for Clinical Hair Restoration (JSCHR), Japan, 2006.

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“Practical Method for Creating a Natural Hairline”, Invited Speaker, Received the Mediterranean Award, International Hair Restoration Society (ISHR), Italy, 2006.

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“Eyelashes and Eyebrows Hair Transplantation”, Invited Speaker, Received the Modena Award, International Hair Restoration Society (ISHR), Italy, 2005.

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“Consideration of Hair Follicle Unit in Hair Transplantation”, Invited speaker, Japan International Hair Restoration Conference, Japan, 2003.

Visit Dr. Nagai`s Blog

 

To get the latest information on the developments in the field of hair restoration, read Dr. Nagai`s blog. 

Dr. Nagai shares his latest techniques and treatment options for hair restoration weekly in his blog.