Eyebrow styles across the world
While many Westerners remove hair from between their eyebrows, women in Tajikistan sometimes darken their unibrows with an herb called usma. The combination of your genetics and other factors makes you likely to have at least (a little bit or more or less )of a unibrow.
Not much is known about the genetics of eyebrow hair distribution. But initial findings offer some clues. Two of the genetic variants in this report are common variations in or near genes, called PAX3 and EDAR, that have been previously associated with unibrow growth.
PAX3: This gene plays an important role in the development of pigment-producing skin cells.
EDAR: This gene controls the development of hair follicles, along with sweat glands and teeth.
Why do we have eyebrows?
Eyebrows contribute to many facial expressions, communicating messages from greetings to surprise to anger. One study also found that people have trouble recognizing faces that are missing their usual eyebrows. This suggests the shape of our eyebrows may also help others recognize us.