It’s hard to imagine how anyone could have imagined that the world would end up with such a large number of red and green hairs.
But that’s exactly what researchers at the University of Manchester in the UK believe they’ve found.
And their research has implications for the evolution of human hair.
They’ve found that a type of hair pigment called keratin, which was first isolated in the 1990s, evolved to be the predominant pigment in red and blue hair from around the world around the mid-18th century.
That pigment is found in many hair types and has a long history in the world’s hair.
It’s believed that this pigment was originally used in the creation of the human scalp, which then became the basis of the modern human head.
But scientists now think that the pigment evolved into other, previously unknown hair-like features that appear to have originated in Japan.
Keratin has a wide range of properties, including being able to absorb and release water.
“Keratins are very useful for making flexible, flexible surfaces, but when you’re dealing with keratin you want to avoid having a surface that’s too rigid,” said Dr Daniel Riedel from the School of Chemistry at the Royal Holloway, University of London.
It’s one of the main reasons why, in the past, the pigment was thought to be useless for skin and hair.
“When keratin was first discovered in the 1920s it was thought that it had no use at all, and it was the result of human civilisation,” Dr Riedell told New Scientist.
“[But] now we know that keratin is actually quite useful for many other structures in the body, and for some other organisms too.”
It’s also one of those things where, if we could understand it better, we could be looking at some interesting biological applications of it.
“A key ingredient in the pigment is a protein called keratins-like peptide (KPLP).
This peptide can bind to keratin to form a flexible, stretchable structure.
It’s thought that this flexibility can make the hair more elastic, and more flexible can make it easier to pull hair through a gap, and also allows it to grow faster.”
The hair is very sensitive to the amount of keratin in it, so that when you cut it, the hair is stretching and it’s pulling through a bigger space,” said Professor Stephen Dyson from the University at Albany in New York.
This flexibility can also be used to hold the hair together.”
A keratin-like structure can hold a lot of things together,” he told New Science.”
You can stretch it, you can pull it out, and the hair doesn’t have to be pulled through a lot.
“We know that some people use keratin for this purpose.”
What we do know, however, is that the keratin-containing peptide also has other uses.
For example, it’s been shown to be able to stop cells from forming clumps, and can also stop cells being killed by chemotherapy drugs.
The pigment also makes it possible to make things that are much tougher, including things like hair-dye.
Professor Dyson also thinks that the red and black hair colour we see in modern Japan may have a biological basis.
“If we’re going to use the keratein for our hair colour, and if we’re also going to make hair dye, then it makes sense that we might have found the red colour as a precursor for the red hair dye,” he said.
“But the hair dye itself has a lot more to do with the colour of the hair.”