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Frequently Asked Questions - FAQ

HST hair transplant method

Would you like to have a natural head of hair again? Hair Stem Cell Transplantation (HST) is a patented, science-based method for hair transplantation based on decades of hair stem cell research. It´s the most sophisticated technique available, suitable for men, women, young and old. HST has proven to be more effective than any other technique and provides natural-looking, high-density results that last a lifetime.

Dr. Coen Gho MD PhD is a leading international expert in the field of hair, hair stem cells and tissue engineering. He is also a specialist in hair restoration for burn victims. In collaboration with universities and academic hospitals all over the world he has developed a range of new therapies for burn wounds and hair and scalp diseases.

His most famous invention is Partial Longitudinal Follicular Unit Transplantation (PL-FUT), in short: Hair Stem Cell Transplantation (HST), a refined technique for hair transplantation, arisen from decades of scientific hair stem cell research.

As an expert in his field Gho is connected to the American Board of Hair Restoration Surgery (ABHRS), the European Burns Association (EBA), the International Society of Burn Injuries (ISBI) and the European Tissue Repair Society (ETRS)

His revolutionary technique set the base for Hair Science Institute, which consists of a Research- and Development branch, a Hair Science Academy and Hair Science Clinics all over the world. Gho works as as a highly experienced practitioner in his clinics in Amsterdam, Maastricht, London, Jakarta and Dubai. Next to that he is a committed to hair stem cell research, constantly striving for better, more patient-friendly treatments.

Next to worldwide clinics Hair Science Institute has it´s own R&D division and Hair Science Academy. We´re the only hair transplantation clinic in the world with in-house facilities for research and education. Clients benefit from the expertise and innovations that´s generated from the three branches.

Our R&D department is continuously working on perfecting our patented HST technique, structurally improving the instruments and efficiency of medical treatments. In addition we want to work as client-friendly and cost effective as possible. To stay on the front-line we are an active partner in scientific research and clinical studies conducted by universities and academic hospitals around the world.

Hair Science Academy is the education hub for our international medical staff. Physicians and technicians are intensively trained in the HST method in a sophisticated theoretical and practical program.

HST sets the power of nature to work by using the capacity for regeneration of human stem cells. The technique is distinctive because only a small part of the hair follicle, instead of the entire follicle, is harvested from the donor area. The tiny piece of tissue contains enough stem cells to grow new hair in the receptor area. A small miracle: the regenerative capacity incites hair growth in multiple areas from one single graft (hair follicle).

New grafts are placed very close to each other, which creates high hair density and a beautiful, natural-looking hairline. A special, preservation solution increases the viability of the grafts by giving them an extra boost. This dual approach is the basis of this sophisticated hair transplantation method which promotes hair growth in both receptor and donor area.

The HST procedure usually takes place in one day of treatment. Your day will look something like this: We start by taking photographs and anaesthetizing the area to be treated. Then follows the harvesting of the grafts. You won’t feel anything, all we ask is your patience. You remain mobile all day long and will not be under the influence of any sedatives. So, you can still make a phone call or stretch your legs. The doctor will then mark the receptor area after which we provide you with a lunch of your choice. In the afternoon, after applying the anaesthetic, the doctor prepares the receptor area, after which the technician applies the grafts to their new location. Once the treatment has been completed, the doctor will do a complete check-up and we take a few more photographs. You will be given instructions and everything you need for the aftercare. The contact moments are set at one day, one week, and one month after treatment to see how you are doing. You can always contact the specialists of the Hair Stem Cell Clinic in between these contact moments.
The results of an HST are permanent. The transplanted hair follicles continue to produce hair for the rest of your life. It is the most effective treatment for making hair more dense and giving it more volume. The harvested grafts are ultra-small to ensure a high-density and natural-looking implant. The results are not immediately visible but take some time to develop. The implanted hair follicles need time to recover and this differs from person to person. The transplanted hair follicles start to grow new hairs three to four months after the treatment. The final result of the hair implants is visible between nine to twelve months on average.
The Hair Stem Cell Clinics operate at the highest medical standards. Here you can always count on the best possible expertise and professionalism. But we also want to make you feel at home and able to relax. That is why we do our very best to make you feel comfortable. From your first appointment right through to your final check-up, we make sure that you have everything you need and more. During the treatment, you are in the care of our dedicated specialists. They are supported by an experienced team that arranges everything else: a lovely lunch, a wonderful four-star hotel, taxi services, relaxation, and anything you need to make your treatment a pleasant experience. You’ll leave our clinic feeling happy and content.
An HST treatment is an investment in yourself. It helps you to feel good about the way you look and allows you to feel comfortable in your own skin once again. Feeling this way is priceless. A Hair Stem Cell Transplantation is a state-of-the-art procedure: a scientifically proven treatment performed by leading specialists, providing you with a result that lasts a lifetime. The costs of this treatment are mainly determined by the number of grafts that are transplanted. If your baldness is the result of an illness, accident, or burn injuries, it is possible that (part of) the costs will be covered by your health insurance. We will be happy to inform you further about this. Whatever your situation might be, we will always give you a clear quote prior to the procedure showing a 100% transparent calculation of the costs.
HST is the best hair transplantation technique currently available. It offers the best results, has been proven to be effective, and has an unshakable scientific foundation. The biggest advantages of this patented method are that it leaves minimal scarring, creates a high hair density, and creates a natural-looking result. HST removes less than other techniques, leaving more hair tissue behind in the donor area. An additional feature of this technique is the use of a unique preservation solution that gives the new grafts an extra boost. This patented method is performed exclusively in official Hair Stem Cell Clinics by specially trained doctors andtechnicians. Are you looking for the very best technique for your hair transplantation? This is it!
The Hair Stem Cell Clinic (HSCC) is a renowned research and treatment institute. Since opening our first clinic in 2005, we have performed thousands of medical treatments. An internationally operating medical team headed by Dr Coen Gho continues to work tirelessly on optimizing the HST technique. Our Hair Stem Cell Clinics are located in Maastricht,Amsterdam, London, Paris, Cap d’Antibes, Dubai, Hong Kong, and Jakarta. These clinics employ HSI trained and certified doctors and technicians from the region, whospeak their clients’ language. HSI will soon be openingmore clinics in countries within and outside of Europe. Every doctor, technician, and nurse affiliated with HSCC is registered in the BIG register for individual healthcare professions, which guarantees the expertise of registered professionals in the Netherlands.

Who is it suitable for?

Everyone loses hair every day. Increased hair loss occurs in certain spots on the scalp when more hairs. are lost more quickly than they can grow. If the follicles shrink, hair cannot be produced. Ultimately, the hair dies as a result and can no longer grow back. This leads to thin hair and bald spots.

In general, there are three causes of baldness in men and women:

  • Aging
  • The influence of hormones
  • Hereditary baldness (androgenetic alopecia)

There are a number of factors that come into play. Hair stem cell transplantation could be right for you if:

  • you have been suffering from hair loss for a quite long time and a pattern has been determined;
  • you have enough donor hair of good quality;
  • you are in good enough health for treatment;
  • your hairline has receded as a result of an operation, for example;
  • you have lost hair as a result of injuries, such as burns.

Getting the right diagnosis is essential. In a free, no-obligation consultation, our doctors and technicians will take the time to discuss your wishes and expectations with you, so that we know what exactly we can do for you.

In principle, anyone with hair loss or hair problems can be treated. But you can discuss whether this is suitable for you with one of our doctors in a free, no-obligation consultation. In certain situations, we do not recommend hair transplantation, For example, you might be too young.

One characteristic of scar tissue is that hair growth never recovers. But thanks to the HST method, hair growth can be restored on scars, even if the donor area is limited. Our highly experienced staff can offer you expert advice on this.

For more than 28 years, doctor and researcher Dr Coen Gho has been closely involved in the development of new medication and treatment methods for people with scars from burns. The results of these studies have led to the creation of the HSI method, which has been a crucial development for many people over the last few years in terms of their physical and mental recovery.

We work together with various burns centres in the Netherlands and Belgium and Germany.

With an eyebrow transplantation, your eyebrows are filled or re-structured. The HST method uses precision instruments and requires very little recovery time, which means the eyebrows heal very quickly. The treatment is carried out in a very natural way that gives natural-looking results for your eyebrows.
A Hair Stem Cell Transplantation is a good solution for filling bald spots in your beard. The HST method is highly suitable for a beard transplantation. Virtually no scars are left behind, making this technique much more widely suitable than conventional hair transplantation methods.

Hair transplantation for afro-textured hair is more complicated than for other types of hair. This is because afro-textured hair also curls beneath the skin. Whether HST method is suitable for your afro-textured hair varies from person to person. To find out what options are available to you, we recommend contacting us to discuss your personal situation.

This shouldn’t be a problem. However, it does depend on the condition of the donor area. Sometimes, this area may be damaged so much that we are limited in the number of grafts. We recommend speaking to one of our doctors about this.
Hair Science Institute specializes in correcting previous unsatisfactory or failed hair transplantations performed by other clinics – also known as reconstructive hair surgery in our Hair Stem cell Clinics. Together with one of our doctors, you can explore the option of reconstruction to achieve the desired result.

About Hair Science Institute

The HST method is a patented, scientific hair transplantation technique that is proven to be effective. The results of a Hair Stem Cell Transplantation are simply unprecedented and no traditional transplantation technique can compare.

There are various hair transplant techniques available for performing a hair transplantation. The best known are the Hair Stem Cell Transplantation (HST) method, the FUE- and FUT method. Find out more about the main differences.

Personal consultation

A consultation is both free of charge and without obligation.

Both the consultation and the treatment are conducted by a certified doctor and technician. The technician and doctor who hold the consultation will also perform your treatment.

A consultation can be very valuable for both you and us. You will find out about the technique, receive personal advice, and have the chance to ask questions. Together with the doctor, you can discuss your options, your wishes, and your expectations in detail. An individual treatment plan will then be put together for you on that basis.
Of course, this depends on the size of the area to be treated. One of our doctors can evaluate your situation in a free, no-obligation consultation. In our experience, one treatment is usually sufficient for minor hair loss at the temples or hairline, or a small bald patch.
Generally, health insurers do not cover hair transplants. In certain cases, our treatments may be covered under health insurance subject to policy conditions. This is usually the case when the treatment is medically necessary or there is serious mental suffering. For example, scars and burns are the result of an accident and/or medical procedure.
The price depends on the number of grafts. The number of grafts that we can remove varies according to the quality of the skin and hair follicles, the size of the donor area, the presence of scars, and the client’s wishes of course. Here is an indication of the prices.


If you want the donor area to be covered after the treatment, we recommend that you grow your hair on the back and sides to a length of at least 8 centimetres. However, if your hair is shaved, more grafts could be extracted, which would produce the best results. Of course, this is rarely done in women for aesthetic reasons, unless it is expressly requested.
You can colour your hair up to one day before the treatment.

The treatment

A single treatment will, on average, take a whole day, from 7.30 am to approximately 5.00 pm. In the morning, you will be lying face down as the grafts are removed from the donor area. Then, you will have a break and be treated to lunch on us. After lunch, we will make the holes in the receptor area and then implant the grafts. In the afternoon, you will be sitting upright. Throughout the treatment, you will be able to watch films and take breaks. Click here for more information about the treatment day.
Thanks to the new technique developed by Dr Coen Gho, you will experience virtually no pain with the HST method. Of course, a local anaesthetic will be applied to the treatment area.
In a normal procedure, we can transplant up to 2,000 grafts in a treatment day. One graft contains up to three hairs. However, the number of grafts required depends on your degree of baldness and your wishes. Additionally, the number of hairs that can be transplanted depends on the size of the donor area and any scars present.
On a given treatment day, 30-35 grafts per cm² can be placed in a completely bald area. In a subsequent session, this density can be increased up to a maximum of approximately 50 grafts per cm².

After the treatment

The wounds created after an HST treatment session are so minuscule that they require virtually no recovery process. After a number of days, hardly anything is visible anymore. Within a week, all visible signs of the treatment will have vanished.
Because we work with needles of up to 0.6 mm in diameter, no scars will be visible. That means you can have any hairstyle you want in the future.
In theory, all transplanted hairs will take. However, the grafts are at their most vulnerable in the first few days after the treatment, and a few can be lost. You can reduce this to a minimum by following our instructions.

We take our treatment and care very seriously, and are only satisfied if we achieve the best results. Our clients’ satisfaction is important to us, and we do our utmost to ensure they are happy. Despite our attention and best efforts, you might not be satisfied. We will always take any complaint seriously and will do everything possible to come to a solution. If you have a complaint, please e-mail us at: <a href=””> </a>
Describe your complaint as clearly as possible and what treatment the complaint relates to. We will then contact you as soon as possible and do our best to resolve the situation to your satisfaction.


Washing with shampoo and blow-drying: four days after treatment. Colouring and perming: one month after treatment.
Heavy physical exertion is not recommended in the first two weeks after treatment. However, you can get back to your day-to-day work straight away.
You can fly immediately after treatment. But to allow the wounds to heal, it is not recommended to expose yourself to the sun until all of the scabs have disappeared.
Yes. In the course of the treatment you will not be administered any medication that would impair your ability to drive. That means you can drive home straight after the treatment.

Discover your options

A non-binding consultation with one of our doctors is valuable for both you and us. You’ll receive personalized advice, ample information, and there’s plenty of room to ask questions.

Together, we extensively discuss the options, your desires, and expectations. Based on this, an individual treatment plan will be created for you.