Eyebrow transplant

Eyebrows are an essential feature of the face and facial expression. In many ways, the eyebrows are at least as important for the appearance of the face as hair because they are located in a central position and they frame the eyes. Unlike hair loss from the scalp, the loss of eyebrows is not a natural process, which is why the lack or absence of eyebrow hair is often difficult to live with, not to mention that it draws attention. The eyebrows can be missing for a number of reasons including thyroid disease and other systemic diseases, alopecia, burns, tattoos, infections, repeated hair removal, the congenital absence of eyebrows and the tendency of eyebrows to thin or miniaturize over time. Eyebrow transplant is a micro-grafting technique intended to fill a lack of hair in the eyebrow arch. This procedure aims to densify the eyebrow, redraw and restore relief to the curve of the eyebrows. Because eyebrows have unique attributes, eyebrow transplant differs from hair transplant in several important points.

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Eyebrow characteristics

The direction of eyebrow hair changes significantly at different points of the eyebrow. In the area close to the nose, hairs point upwards. Hairs in the upper part of the eyebrow point outwards and downwards. Hairs in the lower part of the eyebrow grow outwards and upwards. This cross-linking pattern leads to the convergence of hairs in the middle of the eyebrow, which forms a natural elevation running horizontally along each eyebrow.

The second distinctive feature of eyebrow hairs is that they emerge from the follicles at a very acute angle so as to run along the surface of the skin as they grow. In comparison, the angle of emergence of hair from the head goes up to 45 degrees.
The third important feature of eyebrow hairs is that they grow alone, and not in groups of 1 to 4 hairs like follicular units of the scalp.

The last distinctive characteristic of eyebrow hairs is their very short growth cycle. This means that eyebrow hairs grow (anagen phase) for about 4 months only before entering the resting phase (telogen phase) and then fall. By comparison, the scalp hair has a growth phase that can last 3 to 7 years, allowing hair on the head to grow much longer.

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Eyebrow transplant technique

The most important thing to do for and eyebrow transplant to be successful is to follow the natural direction of the hair carefully. This has to take into account the acute angle of hair growth in order to reproduce the original appearance of the eyebrows and the converging direction of hairs along the eyebrows. Most importantly, perforations in the skin intended to insert eyebrow hair must be made using a very thin instrument that slides under the surface of the skin to ensure that hairs are held horizontally above the surface of the skin as they grow.

Another important aspect of eyebrow transplant is the fact that only individual hair follicles can be used. Because the scalp has follicular units containing 1 to 4 hairs, these units may need to be divided into individual grafts under a microscope. Technically speaking, eyebrow transplantation is considered to be an advanced form of micro-transplantation rather than a transplant.

Positioning hairs one by one and creating the implantation sites in the eyebrows require considerable mastery and a lot of experience from the surgeon. In addition, when the patient’s hair is wavy or curly, it is important to turn the hair so that the curvature of the hair shaft follows the natural curvature of the eyebrow.

Unlike hair transplantation, which involves harvesting hair and transplanting it to the same scalp, hair chosen to be transplanted into the eyebrows does not come from the eyebrows. The characteristics of the hair used may be slightly different in terms of growth rate and appearance. However, over time, the hair transplanted to the eyebrows adopts the characteristics of the hair in the area. The appearance of the eyebrows changes over a period of approximately one year. During this period, the eyebrows can be cut and shaped as desired.