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Brown hair is characterized by higher levels of eumelanin and lower levels of pheomelanin. Of the two types of eumelanin (black and brown), brown-haired people have brown eumelanin; they also usually have medium-thick strands of hair. Brown-haired girls or women of European, West Asian or North African descent are often known as brunettes.
The variants that cause red hair are the same that cause freckling. [5] Freckling can also be found in areas, such as Japan , where red hair is not seen. These individuals have the variant Val92Met which is also found in Europeans , although it has minimal effects on their pigmentation.
Plica was believed to be caused by supernatural entities. The names often describe the believed cause of tangled hair. In Britain this condition was believed to be caused by elves, hence the name "elflock" (mentioned in Shakespearean poetry and folk tales), although this term could refer to tangles much milder than a Polish plait. Folk belief ...
Risk Factors for Hair Loss in Women. There are quite a few risk factors for hair loss in women. They include: Age. FPHL usually develops around midlife and continues to progress as you get older.
What causes women to get chin hair? First, let’s talk about two different types of hair. That peach fuzz on your face is called vellus hair, which also covers the body.
[7] [8] Some individuals with OCA1b can tan and also develop pigment in the hair. [9] One subtype of OCA1b is called OCA1b TS (temperature sensitive), where the tyrosinase can only function below a certain temperature, which causes the body hair in cooler body regions to develop pigment (i.e. get darker).
A close-up view of brown hair Woman with brown hair. Brown hair, also referred to as brunette (when female), is the second-most common human hair color, after black hair. It varies from light brown to dark hair. It is characterized by higher levels of the dark pigment eumelanin and lower levels of the pale pigment pheomelanin.
While the role of estrogen, the primary female hormone, in human hair growth isn’t totally clear, it may play a protective role against hair loss in women. Estradiol , a form of estrogen, plays ...