The average diameter, or thickness, of Asian hair is from 80 to 120 µm, compared to 65 µm in Caucasian hair and 55 µm in Black hair. The average diameter of Hispanic/Latino hair tends to fall between that of Asian and Caucasian. Caucasians have the highest hair density among the ethnicities studied.
Caucasian hair usually appears thicker since it is more difficult to see through the scalp than other ethnic hair types. However, Asian hair is the thickest and coarsest hair of any ethnic group.
The density of Caucasian hair is the highest of the three ethnic groups, so it is the most dense.
African American hair is typically coarser and has a thicker texture than Caucasian hair. It also tends to have a higher density, giving it a fuller appearance. In contrast, Caucasian hair is typically finer, straighter, and has a lower density.
It is not always true that Asians have thicker hair. Although it may appear thicker due to its dark hue, it is not necessarily thicker. Asians often have quite fine, thin and dry hair. This occurs when individuals shampoo their hair too frequently or when they do not take appropriate care of the hair itself.
More than 90% of Han Chinese, 70% of Japanese and Thai people, and 60% to 90% of Native Americans carry the “thick hair" version of the gene. Meanwhile it's almost nonexistent in people of African and European descent.
Traditionally, Asians have been thought to age more gracefully than Caucasians. The resistance to aging in the Asian patient was credited to the thicker dermis of Asian skin that contains greater collagen and the darker pigment that protects against photoaging.
Hair Growth Rate
Asian hair shows the fastest growth rate in comparison to the other two hair types. African hair has the lowest growth rate.
Human hair comes with all sorts of colors, textures and shapes. Notably, African hair is more coiled and dry; Asian hair is straighter and thicker; and Caucasian hair is somewhere in between with around 45% having straight hair, 40% having wavy hair, and 15% having curly hair.
Native Americans, East Asian, Southeast Asian, Southwest Asian, Middle Eastern, Far East Russian, South Asian and Himalayan black-haired people have thicker hair due to the derived EDAR gene allele that is linked to thicker and potentially straighter hair in some parts of Asia, and shovel-shaped incisors.
Genetics (which controls ethnicity) is the number one cause of hair loss. Certain races have higher rates of hair loss compared to others. Caucasians have the highest rates out of all the ethnic groups. On the opposite end of the spectrum, Native American Indians, Inuits, and Chinese have the lowest rates.
Sweden. Livings standards, healthy lifestyles, geography, and diet are the primary factors why people in Sweden have the healthiest and beautiful hair.
Japan, Spain and Sweden are widely known for having people with healthy hair, but there are also other countries like India, France and Russia that are also known for helping people keep their hair natural and not messing with any artificial coloring.
* East Asian hair has twice the diameter and a much thicker cuticle than Caucasian hair. Most hair types have around five layers of cuticles while East Asian hair has closer to ten.
Human and bear hairs are the strongest, exhibiting a plateau-like response followed by higher strain hardening. Javelina hair is at the opposite end of the spectrum by virtue of its cellular structure. Horse, giraffe, and elephant hairs show a quasi-linear hardening.
You see, the women of the Red Yao tribe have some of the longest hair in the world – as in their hair is almost the same length as their height!
We believe one of the reasons is that super-straight hair — also known as type 1a hair — is so rare. In fact, it's the rarest hair type. Only 2% of the world's population has 1a hair. It's mostly found in people of Asian descent.
The story of human migration and evolution is written in hair DNA. In sub-Saharan Africa, genes favour tight, curly hair. But in east Asia, mutations have led to straighter, thicker hair. In Europe, other mutations brought wavy and straw-coloured hair.
However, we have three main classifications of hair type based on ethnicity/race. These are Afro hair, Caucasian hair (also known as European hair), and Asian hair.
H. Harris, publishing in the British Journal of Dermatology in 1947, wrote American Indians have the least body hair, Chinese and black people have little body hair, white people have more body hair than black people and Ainu have the most body hair.
Black hair follicles have an elliptical shape that grow in a spiral and results in the slowest growth rate, at only about a third of an inch per month. It is also more fragile and prone to breakage. Asian hair follicles are round, usually very straight, and strong.
According to a talk presented here last week at the annual meeting of the American Society of Human Genetics, a single genetic variant may explain why East Asians have thicker hair fibers than other populations. The discovery is part of a wave of newly found genes that determine what individuals look like.
Australians are more exposed to higher solar UV radiation levels that accelerate signs of facial ageing than individuals who live in temperate northern countries.
Caucasian skin has very little pigment to protect your collagen from breaking down at an early age. Northern European caucasians with thinner skin develop visibly rough skin texture with aging and ultraviolet (sun) exposure. Wrinkles can appear as early as your 20s.
The biggest changes typically occur when people are in their 40s and 50s, but they can begin as early as the mid-30s and continue into old age. Even when your muscles are in top working order, they contribute to facial aging with repetitive motions that etch lines in your skin.