I too believe Asian hair just has the characteristics to grow long, be it due to its thickness, chemical structure or growth cycle. Below is what
The Trichological Society says:
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Hair Density, Numbers of Hairs, Rate of growth
The average human scalp measures approximately 120 sq. inches (770 sq.cm).
The hair covering varies numerically according to hair colour and ethnicity.
Caucasian hair type: The figures quoted are based on research published by Drs. Erasmus Wilson, Withof & Stelwagon in the nineteenth century and are therefore in inches.
Blonde 146000 hairs, diameter measuring 1/1500th - 1/500th in.
Black 110000 hairs, diameter measuring 1/400th - 1/250th in.
Brunettes 100000 hairs, diameter infinitely variable
Titian (Red 86000 hairs, diameter infinitely variable
Afro hair type: Colour is predominately black. Hairshafts are multi helixal with a wool-like character. Healthy individuals possess between 50000-110000 scalp hairs.
Mongolian (Asian) hair type: Possessed by the greatest numbers of people worldwide. Hairshafts are predominately straight. Colour is predominately black. Regional variations exist, but healthy individuals possess an estimated 80000-140000 scalp hairs.
Rate of growth
Normal Caucasian hair growth rate is 1-2 cm per month. Researchers have shown that this rate of growth may reduce beyond the length of approx. 27cm. Afro-Caribbean hair growth rate is approximately half that of Caucasian, and due to the fragility of their multi-helixal structure, rarely attain great length. Asian hair-shafts grow rapidly exceeding the average for Caucasians and may attain great length.
In the majority of humans, terminal hair is straight and is circular in cross section - such hair-shafts having emerged from host follicles with similar characteristics. If however, due to genetic factors or skin injury the follicle is:
<ul type="square">Of a spiral or zigzag structure; the hair-shaft will emerge in conformity and exhibit appropriate helices. This is demonstrated by many with the Afro-Caribbean type hair, and also occasionally as a result of pressure employed during multiple hair follicle transplantation surgery.
Naturally flattened, imperfect, oval or kidney shape; the hair-shaft will emerge exhibiting waves/curls of appropriately varying degree. Numerous factors incidental to natural healthy life can influence hair formation. Other aberrations may result from ill health, drug therapy and ageing etc. [/list]
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