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RO A hairline is built from named parameters, not from taste. The published framework fixes where the line starts, where it turns, and how it is graded from front to back — and each of those has a rule that can be stated and checked (Shapiro & Shapiro, Facial Plastic Surgery Clinics of North America, 2013).
Two points define the shape. The mid-frontal point, the lowest central point of the hairline, is placed roughly 7 to 10 centimetres above the glabella, adjusted for age, the extent of loss and the donor available. The frontotemporal angle, where the hairline turns back toward the temple, is aligned with a vertical line dropped from the outer corner of the eye — a landmark that keeps its position as recession advances, which is why it is used instead of the existing hairline.
| Zone | Depth | Character |
|---|---|---|
| Transition zone | 0.5–1.0 cm | Single hairs, deliberately irregular and soft |
| Defined zone | Variable | Denser, less see-through than the transition |
| Frontal tuft | Oval, central | The visual weight of the whole hairline |
Density at the front is deliberately restrained. Incisional density in this region is typically in the range of 25 to 35 follicular units per square centimetre, and packing above that is contested rather than superior. The hairline convinces through gradation and irregularity, not through the number of grafts crowded into its first centimetre.
Related terms
- Micro-irregular hairline design
- Natural vs artificial hairline
- Temple point reconstruction
- Density planning
For how a hairline is planned and agreed in practice, see hairline design. For how a hairline changes naturally with age, see mature versus receding hairline.
