Advantages and Disadvantages of DHI Technique

Different from the known hair transplantation (FUE technique), in DHI technique, which is

performed without shaving the head, the hair follicles extracted from the donor area are

implanted directly into the plantation area with implanter pen (Choi needle), without any

process of channel opening.

Implanter pens have very thin and sharp tips. These cylindrical, thin-tipped implanter pens,

also called Choi needles, have a channel shape and hair follicles are inserted into the needle

in this channel.

How is it applied?

Firstly, the hair follicles extracted from the donor area are taken into the implanter pen

channels very carefully. Then, the planting is performed with the push function of the

implanter pen at the most suitable angle to the plantation area (40-45 degrees angle). One

of the points to be considered during this planting step is performing the planting in the

direction of the person’s hair.


The main advantages of this technique are as follows:

  • In this technique, time of hair follicles remaining outside the tissue reduces to a
  • minimum level, thus it enables a healthier planting opportunity.
  • The survival rate of hair follicles is also higher in this technique.
  • Since there is no channel opening process, the risk of bleeding is very low due to less
  • incision area.
  • This technique allows more compact planting.
  • Faster recovery is seen after planting.

With this technique, the opportunity of performing unshaved hair transplantation may be a

motive to prefer because it is possible according to the request of the person.


Apart from the many advantages mentioned above, this technique has some disadvantages.

  • In the situation of not performing this technique by experts and well trained

professional teams, it may cause negative results.

  • It is a more expensive method than other hair transplantation techniques.
  • Plantation process time is longer.

The disadvantages of this technique can be listed in this way.