The colour of human hair is determined by two varieties of melanin, the pigment which also dictates our skin colour. And the bad news for those wanting naturally blue hair is that both varieties come in only boring colours.
Sadly, there are no genetic variants for blue hair-at least not at this stage of human evolution. But that doesn't mean there aren't lots of interesting things to learn about your natural hair color!
Why don't people have different natural hair colors like blue or green? Because our cells don't produce blue or green pigments. Hair gets its color from cells called melanocytes that produce melanin, just like the melanin produced in your skin.
Red is the rarest hair color, according to Dr. Kaplan, and that's because so few MC1R variants are associated with the shade. “Only three variants are associated with red hair,” she says. “If a person has two of these three variants, they almost certainly have red hair.
Green is considered by some to be the actual rarest eye color in the world, though others would say it's been dethroned by red, violet, and grey eyes. Green eyes don't possess a lot of melanin, which creates a Rayleigh scattering effect: Light gets reflected and scattered by the eyes instead of absorbed by pigment.
'It's extremely rare for people to have hair that is naturally a strawberry blonde color. Basically, strawberry blonde is mostly based on red tones, with blonde highlights dotted here and there. It takes its name from the Italian renaissance.
Black hair is the darkest and most common of all human hair colors globally, due to larger populations with this dominant trait. It is a dominant genetic trait, and it is found in people of all backgrounds and ethnicities. Black hair contains a large amount of eumelanin pigmentation, a type of melanin.
It is estimated that more than 90 percent of people in the world have brown or black hair. Some people have variations in one copy of the MC1R gene in each cell that causes the gene to be turned off (deactivated). This type of genetic change is described as loss-of-function.
Even teenagers and people in their 20s may notice strands of white hair. The human body has millions of hair follicles or small sacs lining the skin. The follicles generate hair and color or pigment cells that contain melanin. Over time, hair follicles lose pigment cells, resulting in white hair color.
If you have two pheomelanin genes, you get the red and red-blonde hair types in different strengths, depending on the functionality of the genes. There aren't any genes that would make something that looks purple ...
It turns out that brown hair is dominant. That means that even if only one of your two alleles is for brown hair, your hair will be brown. The blond allele is recessive, and gets covered up.
No, no one has pink hair at birth. Pink is not a natural color for hair anywhere.
Genetics
If you notice white hair at an early age, it's likely that your parents or grandparents also had graying or white hair at an early age. You can't change genetics. But if you don't like the way your gray hair looks, you can always color your hair.
Despite the claims made online and by product marketers, it's not possible to reverse white hair if the cause is genetic. Once your hair follicles lose melanin, they can't produce it on their own. As melanin production slows, your hair turns gray, and then white when melanin production has completely stopped.
Eye color is determined by variations in a person's genes. Most of the genes associated with eye color are involved in the production, transport, or storage of a pigment called melanin. Eye color is directly related to the amount of melanin in the front layers of the iris.
Very dark brown hair, easily mistaken for black hair, can be found occasionally in parts of East Asia.
People with albinism have a reduced amount of melanin, or no melanin at all. This can affect their colouring and their eyesight. People with albinism often have white or very light blonde hair, although some have brown or ginger hair.
Blonds get white hair just like brunets, but some blondes only appear to get a lighter blond while others experience their blonde hairs getting darker and duller as the white hairs begin to appear. Still, blondes can, over time, have a full head of white hair.
There are two reasons why we believe African hair texture is genetic. Firstly, the texture is universal in Africans, while nearly absent from other ethnic groups. Secondly, it is consistently passed down to the children in each new generation.
Some consider white to be a color, because white light comprises all hues on the visible light spectrum. And many do consider black to be a color, because you combine other pigments to create it on paper. But in a technical sense, black and white are not colors, they're shades. They augment colors.
What Are Black Eyes? A black eye is bruising around the eyes that can look purple, black, or dark blue. This can happen when trauma to the head or face causes bleeding and swelling under the skin around the eye.
Only 8 Percent of the World's Population Has Blue Eyes
Since blue eyes are genetically recessive, only 8 percent of the world's population has blue eyes. While blue eyes are significantly less common than brown eyes worldwide, they are frequently found from nationalities located near the Baltic Sea in northern Europe.
Green eyes are the most rare eye color in the world. Only about 2 percent of people in the world have naturally green eyes. Green eyes are a genetic mutation that results in low levels of melanin, though more melanin than in blue eyes. Green eyes don't actually have any color.
Dirty blonde is unlike your typical squeaky clean blonde shades like platinum and champagne. The hue is a medium to dark blonde shade with wheaty, brown undertones (hence, the word dirt in the name). These hints of brunette make dirty blonde dimensional and low-maintenance—what more could you want?
Just like one finds grey hairs on the head upon ageing, appearance of grey hair on the eyebrows is also a sign of ageing/premature ageing. While for some, these signs start showing up in the 40's or 50's, some folks encounter the problem of grey hair on eyebrows in their 30's.