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Not only are they more likely to burn when the mercury rises, but they also feel the most pain when it drops.

Contrary to what any image of a fiery mane might have you believe, redheads tend to have fewer follicles than other hair types, they just happen to be thicker. Unfortunately, it's this coarseness that lends to red hair's drying out more quickly.

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.

But their genetics, namely two copies of the MC1R gene, may put them at a higher or lower risk for many health conditions than others. For instance, some people with red hair may have an increased risk of skin cancer. And those genetic variants may protect others against prostate cancer.

“To keep it simple, if the red you are trying to achieve is lighter than your hair there is a possibility you will or may experience chemical damage or breakage. If you are going darker than your natural or current color, then the chances of damage are low to minimal.

At the same time, redheads are better at manufacturing vitamin D and have a lower prostate cancer risk. The reason for those differences is rooted in DNA. People with red hair carry two copies of a variant melanocortin 1 receptor (MC1R) gene.

Redheads have a genetic variant of the MC1R gene that causes their melanocytes to primarily produce pheomelanin. However, a study published in 2018 has lead scientists to believe that there many be a number of other genes associated with pheomelanin that controls hair colour.

The recessive gene that carries red hair has been traced back 50,000 Years when early modern gingers first appeared in the grasslands of Central Asia. Red hair was regarded in classical literature as the epitome of everything barbaric – but only when it comes to men. A redheaded woman is a force of nature.

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.

Less expectedly, red hair is also associated with pain sensitivity, endometriosis, Parkinson's disease, decreased platelet function and, perhaps, defects in the immune system [2–11]. These associations seem to involve a risk factor not directly related to fairness of skin and vulnerability to UV.

The issue goes all the way down to the molecule, which means that red hair color may fade faster regardless of the color kit brand or manufacturer. The red hair molecule is larger than other color molecules, so it doesn't penetrate the cortex of the hair as deeply as other color molecules.

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.