Eyebrows are more important to one's appearance than scalp hair, as eyebrows are in a more central position on the face. Unlike the loss of scalp hair, the loss of one's eyebrows is not viewed as a natural process and is, therefore, not cosmetically acceptable.
The direction of eyebrow hair changes dramatically in different parts of the brow. In the region of the eyebrow nearest the nose, the hair points upward. The hair across the top of the eyebrow points outward and downward. The hair in the lower part of the brow grows outward and upward. This crisscross growth pattern causes the hairs in the middle of the eyebrows to converge and form a subtle natural elevation running horizontally through the middle of each eyebrow.
The eyebrow hair has a very short hair growth cycle. This means that Eyebrow Hair Transplant will grow (in anagen) only for about 4 months before it enters the resting (telogen) phase and falls out. In contrast, scalp hair has a growth phase that can last 3 to 7 years, enabling the scalp hair to grow much longer.
The most important aspect of transplanting eyebrows is to follow the natural hair direction very closely. This entails very subtle angle changes to recreate the fan-like splay of hair at the medial end of the brow and the converging hair direction as one moves laterally along the brow. Single hair micrografts, placed into recipient sites that have been created at very acute angles to the skin surface, require a considerable about of skill and experience. In addition, when the patient's hair is waved or curly, it is particularly important to rotate the hair so that the curve of the hair shaft follows the natural curve of the eyebrow.
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