A cowlick-- also pronounced "calic" in some US regions (e.g. Toledoans) - is a section of hair that stands straight up or lies at an angle at odds with the style in which the rest of an individual's hair is worn. Cowlicks appear when the growth direction of the hair forms a spiral pattern. The term "cowlick" originates from the domestic bovine's habit of licking its young, which results in a swirling pattern in the hair. The most common site of a human cowlick is in the crown, but they can show up anywhere. They also sometimes appear in the front and back of the head.
Hair on the back of the head usually grows in a circular flattened pattern from a central point; this can also occur on facial hair in men. The definition of a whorl is hairs that rotate round an axis. The point where we find the hair whorl is the spot where the hair changes direction. On top of the head hair grows to the front, on the back of the head it grows towards the nape and hair grows to the left and right side of the head on the sides of the head. The hair whorl can be in the center of the head but it can also be located to the left or right side of the head. In the very center of the scalp it will be visible because the hair lies flat.
People tend to have at least two hair whorls with one being dominant and clearly visible while the other is less obvious. In the center of the hair whorl you can see the hairs protruding from the scalp. When combed against the grain of the hair, the hair in the center of the cowlick will stand up straight. When left too long, the cowlick will create a flat spot, when left too short it will stand up.
Cowlicks are more obvious in straight, thick hair. In people with straight, coarse hair the scalp will show in the center of the whorl because the light penetrates to the scalp. Both men and women have cowlicks, which can be covered by longer hair so the whorl is not visible.
One theory is that a cowlick stems from a circular arrangement of the collagen fibers in the cranial fascia of the area of the cowlick. This arrangement is different from the normal, straight pattern.
Many people find cowlicks irritating as they often conflict with the desired hairstyle. There are several ways to tame an unruly cowlick. For most people, a combination of the right hairstyle, length, product used, and styling technique can overcome the appearance. For people who are more concerned about cowlick management, more drastic measures may be used. Electrology, waxing, and even cosmetic surgery can be used to more permanently correct the cowlick.
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