With Caucasians, research shows that “45 percent of European people have straight hair, 40 per cent have wavy hair and 15 per cent have curly hair.” Curly hair is not exclusive to one race and it does not mean you have to be mixed raced to have curly hair. It's actually not rare for Caucasians to have curly hair.
Human hair comes with all sorts of colors, textures and shapes. Notably, African hair is more coiled and dry; Asian hair is straighter and thicker; and Caucasian hair is somewhere in between with around 45% having straight hair, 40% having wavy hair, and 15% having curly hair.
Many people of European and Asian descent have curly hair, and curl patterns vary greatly among people of African descent. As the combining of ethnicities becomes more common in an increasingly global world, these historical ways of describing hair may become increasingly less accurate.
Absolutely not. It has nothing to do with African ancestry. Wavy hair is very common in people who have no sub-Saharan African background. Being Caucasian doesn't mean having straight hair.
Curly hair is a hereditary trait shared by all races throughout the world. However, many scientists believe that the reason why curly hair is more dominant in black people is that this genetic trait was passed down through many African generations for millions of years.
The terms 'European hair' and 'Caucasian hair' are often used interchangeably and are taken to denote 'wavy' to 'straight' hair; 'East Asian' hair is taken to mean 'pin-straight' hair; and 'African' or 'ethnic' hair is taken to signify 'curly' or 'very curly' hair.
Less than 20% of the world's population is born with naturally curly hair, so in terms of pure numbers, it's fairly rare.
Coily hair, commonly referred to as Afro-textured or kinky hair, is naturally very dry and spongy in texture and can be soft and fine or coarse and wiry. Strands form very tight, small curls of zig-zags right from the scalp and are prone to major shrinkage.
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. If you're looking for something to help you stand out—and look dashing while doing it—then it's time to go natural.
Evolutionary trait
It is known that 45% of European people have straight hair, 40% have wavy hair and 15% have curly hair.
The average diameter, or thickness, of Asian hair is from 80 to 120 µm, compared to 65 µm in Caucasian hair and 55 µm in Black hair. The average diameter of Hispanic/Latino hair tends to fall between that of Asian and Caucasian. Caucasians have the highest hair density among the ethnicities studied.
Caucasian hair can be smooth, wavy or curly. Its colorimetry can vary from blond to dark brown. It grows obliquely, and grows about 1.2 centimeters per month. Caucasian hair has an oval shape. The density of Caucasian hair is the highest of the three ethnic groups, so it is the most dense.
Textured hair is a fast-growing market: an estimated 65% of the U.S. population has curly, coily or wavy hair.
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.
Many Asians have naturally straight hair, but there is a significant group of us who do have naturally curly or wavy hair! However, because it's the norm to see straight and sleek hair, curly haired boys and girls tend to think that their hair is some kind of unruly straight hair that isn't behaving.
Studies have shown that the morphology of the hair follicle can be influenced by a person's race. Individuals of African ancestry, for example, are more likely to have curly hair due to the oval shape of their hair follicles.
Straight hair follicles tunnel down vertically from the skin's surface into the dermis. If the follicle angles into the dermis this will lead to a curve which will curl as it grows.
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.
If it dries straight without a bend or curl, then you have straight hair (or type 1 hair as it is commonly referred to). If it dries with a slight curve or “S” shape, then it's considered wavy hair (type 2).
Type 3C hair has a defined curl that holds a tight, S-shaped pattern. "3C hair is dense, and most people who have this hair type have curly and coiled strands blended into their hair pattern," Williams says.
Type 3 and 4 are hair texture types for African-American hair. People who have type 3 hair have S shaped bouncy curls that are well defined, dry and slightly rough. This type has further three hair texture types for African-American hair: type 3a, 3b and 3c.
Coily Curls
The last, but most rare type of curl is the coily curl. This curl type is similar to that of an afro and when observed carefully, looks like the angular letter 'Z'. These curls require the most amount of moisture, as the hair type is much thicker than the other curl types.
When we casually observe via our eyes, we may feel that we have inherited most of our hair features from either our mom or dad. However, the reality is that we inherit equal volume of genetic information from both mom and dad.
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.