Asian hair generally exhibits the strongest mechanical properties, and its cross-sectional area is determined greatly by genetic variations, particularly from the ectodysplasin A receptor gene.
Sea Otter (Enhydra lutris) Sea otters have the thickest coat of any animal, with one million hairs per square inch of skin. They spend their whole lives at sea and are the only marine mammal that does not have a layer of blubber to insulate against the cold ocean water.
The thickest strand of human hair is 772 micrometres (0.03 inches) and was plucked from the beard of Muhammad Umair Khan (Pakistan), in Lahore, Punjab, Pakistan, as verified on 3 March 2021. The hair was discovered on Muhammad's chin as part of his beard.
Human hair is in the neighborhood of 200 MPa, while structural steel is about 400 MPa. Spider webs are far stronger, though, at 1,200 MPa. And carbon nanotubes are among the strongest known materials, at about 62,000 MPa.
According to a global study based on 4 characteristics that determine healthy hair – thickness, tensile strength, shine, and smoothness – Indian women have the best hair in the world.
Mechanical properties vary among different ethnicities. Asian hair demonstrates the highest hardness and elastic modulus, followed by Caucasian and African hairs, respectively.
Brunette hair is often seen as the most attractive by both men and women. Blonde hair is associated with youth and fun, making it appealing to younger audiences. Red hair has a unique charm that many find attractive, though it is less common.
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.
Amazingly, gorillas and humans have the same number of hairs on their bodies. Most of mine seem to disappear from my eyebrows and reappear on my chin.
Asian hair and Caucasian hair handle stress and fatigue well. Asian hair has the highest hardness and elasticity. It is resistant to stretching and can withstand a traction force of 60 to 65 grams.
But that's not all: The thickness of hair fibers changes, too," says Thomas. You start with "baby fine" hair that gets a lot thicker around puberty and continues to increase into your 30s; thickness then begins to decrease around your early 40s.
Caucasian, Asian and Indian hair samples were put to the test for the World's Best Hair study. Their results put an end to any splitting of hairs over the issue: in terms of health, the Indian hair is the best, topping other ethnic groups on all four counts.
Most mammals have hair which can vary greatly in color, length and texture (Pough et al., 1989). However, there are several so-called 'hairless' species – such as whales, walruses, elephants, and humans – that have considerably less hair than other mammals.
The African bush elephant holds the title of the strongest animal on earth. Its trunk alone is able to lift more than 400 lbs. As the world's strongest animal on land, elephants—who take decades to finish growing—symbolize the sheer force that nature wields.
It has been suggested that a Boeing 747 could be stopped in flight by a single pencil-width strand and spider silk is almost as strong as Kevlar, the toughest man-made polymer. It is finer than the human hair (most threads are a few microns in diameter) and is able to keep its strength below -40°C.
Clinically speaking, there is technically no scientific evidence to suggest that the neural patterns responsible for memories can transfer to hair, but there are other explanations that still make plenty of sense.
Hair breakage can occur at various points on the hair strand, and in different places on the head, depending on the cause of the breakage. Split or broken hair strands can be caused by a range of factors, including diet, products, hair routine, hair styling, life factors and sleep.
Nature's Rarest Palette: Red Hair Standing at the apex of rarity, natural red hair occurs in just 1-2% of the global population. This striking shade results from a specific genetic variant of the MC1R gene, requiring both parents to pass on the recessive trait.
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.
Type 1A: The rarest hair type, this one is very straight and fine with a “wispy” appearance. It's very difficult to get it to hold a curl. Type 1B: Though still straight, this type has a medium (rather than fine) texture and a little more volume.
When broken down by gender, men ranked gray, blue, and green eyes as the most attractive, while women said they were most attracted to green, hazel, and gray eyes. Despite brown eyes ranking at the bottom of our perceived attraction scale, approximately 79% of the world's population sports melanin-rich brown eyes.
While younger respondents tended to rate men with hair as more attractive, older respondents showed a greater appreciation for bald men. This shift likely reflects a broader understanding of attractiveness that extends beyond physical traits to include personality, confidence, and life experience.