One of the many facts about redheads is that their hair will never turn grey. The pigment in their hair that causes it to be red will just fade over time, causing their hair to turn blonde or white, but never grey.
When red hair follicles stop producing their gingerish pigment, the colour fades from red through a glorious spectrum of faded copper to rosy-blonde colours, through to silvery-white. It's a sight to be seen, giving an almost autumnal effect as your red hair moves into its 'silver fox' phase.
Redheads probably won't go grey. That's because the pigment just fades over time. So they will probably go blonde and even white, but not grey.
Lifespan: up to 20 years in captivity, 5-10 years in the wild.
Redheads actually retain their natural pigment a lot longer than other shades, so there is no need to panic about going gray or white. Natural red hair simply fades with age through a spectrum of colors of faded copper to rosy-blonde, then to silvery white.
Some evidence suggests redheaded adults often appear older than their actual age. For example, one study published in 2016 in Current Biology found that adults who carry two copies of the MC1R gene variant are more likely to look two years older than other people their age.
The study, performed by scientists with the Erasmus University Medical Centre in the Netherlands and Unilever, found that folks with the MC1R gene — which protects skin against UV rays and affects its pigmentation — often looked two years older than they actually were.
Having red hair and blue eyes is the rarest hair/eye color combination possible. The odds of a person having both of those recessive traits is around 0.17%. Instead, most redheads have brown, hazel or green eyes, according to Medical Daily.
According to an article by evolutionary biology professor Mark Elgar, PhD, of the University of Melbourne, blue-eyed redheads are the absolute rarest, with 0.17% of the population having that combination of hair and eye color.
Most (natural) redheads will have brown eyes, followed by hazel or green shades.
According to Health Magazine, redheads can produce their own vitamin D when exposed to low levels of light. 4. You may not need as much pain medication. The gene responsible for red hair (MC1R) also releases a hormone that is similar to endorphins which limit the feeling of pain.
Fun facts about red hair strands
Redheads are less likely to go grey. The pigment in red hair typically fades over time from red to blonde and white, but not grey. Redheads produce more Vitamin D in a shorter amount of time than people with other hair colors.
Natural red hair holds its pigment more firmly than other types. So even though its lighter appearance might make you think it would be easier to dye than dark brown hair, red hair needs to be bleached before it can be dyed.
The MC1R gene might actually make redheads look young
According to research published in Current Biology, people with the MC1R gene, aka the gene that produces red hair and fair skin, tend to look several years younger than their non-ginger counterparts.
The skin of a redhead is thinner compared to others and is derived from the ectoderm. Teeth enamel is also derived from the ectoderm and thus is thinner than usual. Since the enamel coating is thin, the inner layer of tooth-dentin is more visible and offers a yellowish appearance.
It's been proven that people with ginger hair don't go grey, but instead retain their natural pigment for much longer than any blonde or brunette counterparts. Red hair simply fades with age, covering a whole spectrum of copper and rosy-blonde colours until it reaches a silvery-white.
And when you meet a red head with blue eyes, you are looking at the rarest colour combination of all for human beings. Around 17 per cent of people have blue eyes, and when combined with 1-2 per cent having red hair, the odds of having both traits are around 0.17 per cent.
Ireland has the highest number of red-haired people per capita in the world, with the percentage of those with red hair at around 10%.
“Red hair and blue eyes are both recessive traits which means a person needs to inherit both of the genes for red hair and blue eyes, from both parents. In contrast, brown hair and brown eyes are dominant traits, which is why they are much more prevalent.”
Irish immigrants arriving in Australia looking for labour gained a reputation as heavy drinkers and fighters, with 'blue' being local slang for a fight. The term evolved to come to mean a redheaded Irishman.
Recessive traits like red hair can skip generations because they can hide out in a carrier behind a dominant trait. The recessive trait needs another carrier and a bit of luck to be seen. This means that it can sometimes take a few generations to finally make its presence known.
Contrary to what many people assume, redheads did not originate in Scandinavia, Scotland or Ireland, but in central Asia. Their coloring is due to a mutation in the MC1R gene that fails to produce sun-protective, skin-darkening eumelanin and instead causes pale skin, freckles and red hair.
Research has shown that people with red hair perceive pain differently than others. They may be more sensitive to certain types of pain and can require higher doses of some pain-killing medications. However, studies suggest that their general pain tolerance may be higher.
Previous studies had shown that redheads inherit two versions of the MC1R gene that leads to red hair – one from their mum and one from their dad. Although almost everyone with red hair has two copies of the red-haired version of MC1R, not everyone carrying two red-haired versions is a redhead.
Scientists have found that those who have red hair are more likely to develop skin cancer than those who have other hair colors. This can also lead to debilitating and fatal brain disorders. Redheads become especially vulnerable due to the MC1R gene that limits the amount of dopamine released into the brain.