Less than 20% of people have naturally curly hair. The percentage gets even smaller when you consider the scores of guys out there who don't embrace their curls.
Type 1A hair is very straight and fine, with no hint of wave or curl. As it is so straight and fine, when the natural oils travel to the ends, it tends to cause it to look like oily hair. It is the rarest hair type and is common among women of Asian descent.
Yes, only 11% of the population have curly hair.
Over 60% of the world's population has curly hair, yet most research to date has clumped hair into three catchall types - African, Asian, and Caucasian.
Hair morphology is one of the more conspicuous features of human variation and is particularly diverse among people of European ancestry, for which around 45% of individuals have straight hair, 40% have wavy hair, and 15% have curly hair.
The story of human migration and evolution is written in hair DNA. In sub-Saharan Africa, genes favour tight, curly hair. But in east Asia, mutations have led to straighter, thicker hair. In Europe, other mutations brought wavy and straw-coloured hair.
Since curly hair is a dominant gene, there is a good likelihood that one or two curly-haired parents will produce a curly-haired cutie. But genetics are tricky, and there's a chance that two parents with curls could carry the straight hair recessive gene, and pass that onto their offspring.
Your hair is naturally voluminous
Curls adds volume to your hair effortlessly, and you never have to worry about it being flat, limp and lifeless like those with straight hair. Even on days when you straighten your curls, there is always going to be that little amount of volume that will make others go green with envy.
Curly hair is often associated with a fun-loving, warm hearted and outgoing personality. If you have curly hair you are perceived as being courageous, outspoken, and spontaneous. You are probably someone who likes to challenge perceptions and norms.
In fact, more people prefer curly hair to straight hair. Though beauty is seen differently by everyone, one thing is for sure; curly hair is getting a lot of love lately. In fact, in a survey conducted by StyleCaster, a surprising 58% of guys thought curly hair was sexier than other hair textures.
An estimated 65 percent of the U.S. population has curly, coily or wavy hair, with a growing percentage of textured-hair women embracing their natural hair .
Contrary to popular belief, there's no real difference between straight hair and curly hair when it comes to hair loss. Since hair loss is primarily caused by hormonal, genetic, health or environmental factors, the type of hair you have doesn't significantly impact your risk of experiencing hair loss.
Lots of traits are statistically rare: Left-handedness (just 10 percent of the population!), curly hair (11 percent!), and blond hair (4 percent!), to name a few.
Hair type 1A is super-straight. It doesn't even hold a curl! 1A is the rarest hair type. It is usually found on people of Asian descent.
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.
Curly hair is not certain to a race or ethnicity, it appears all over the world in many forms. White, brown, black and everything inbetween! There is also a scale on which curly hair is classified (2a-4c).
The question then becomes: Why is curly hair so attractive? In my opinion, curly hair is attractive because it is spontaneous and unpredictable. There is something beautiful about it's independence. Your curls will not conform to societal pressure and they will not acquiesce to any attempts to tame them.
Curly hair is considered a “dominant” gene trait. Straight hair is considered “recessive.” To put that in simple terms, that means that if one parent gives you a curly-haired gene and the other parent gives you a straight-haired gene, you'll be born with curly hair.
Curly hair is dominant, so someone is more likely to have curly or wavy hair if at least one of their parents does. Recent research points to trichohyalin, a protein in hair follicles, as having primary influence over hair curl. However, there are many genes contributing to hair curliness, most of them unknown.
Fibres in the latter group were thicker, stronger and stiffer, with a greater scalp density. This means that curlier hair was found to be thicker, stronger and more resilient under mechanical forces than the near-straight hair.
The fact of the matter is that curly hair takes a longer time to grow longer because it grows in a curl, rather than straight down. But curly hair, as well as straight hair, usually grows about 1/2” per month. So with patience, and with a coordinated plan with your hair stylist, you can have longer hair.
The gene for curly hair in Caucasians
It has been long established that curly hair is a dominant trait in Caucasians and straight hair is recessive.
So back to your question, here is a simplified answer. If both of your parents have curly hair, you are more likely to inherit the trait of curly hair. This means that you have received both copies of the curly hair gene from your parents. However, one parent could have straight hair while the other has curly hair.
The same study showed that Asian (East and West) hair shape is also mostly straight (46.7%) or wavy (41.3%), with some curly hair (12%) (n = 92). However, African hair shape is mostly curly (94.9%), with some wavy hair (5.1%) (n = 39).
Hair texture.
Caucasian hair usually appears thicker since it is more difficult to see through the scalp than other ethnic hair types. However, Asian hair is the thickest and coarsest hair of any ethnic group.