While no two heads of hair are the same, there are three main classifications of hair type based on race Asian hair, Afro hair and Caucasian hair (which can also be referred to as European hair).
Human hair is generally categorized into three major groups according to ethnic origins, ie, Asian, African, and Caucasian.
Caucasoid hair ranges from straight to wavy to helical, with a round or oval shape and thinnest cross-sectional area. Negroid hair is generally commonly helical or spiral with different variations.
We believe one of the reasons is that super-straight hair — also known as type 1a hair — is so rare. In fact, it's the rarest hair type. Only 2% of the world's population has 1a hair. It's mostly found in people of Asian descent.
Of course, no two heads of hair are the same, even if both persons have the same ethnicity. However, we have three main classifications of hair type based on ethnicity/race. These are Afro hair, Caucasian hair (also known as European hair), and Asian hair.
European hair has a fine denier and has natural light brown and blonde shades, meaning less processing. Not recommended for coarse hair textures, but can be used by hair types other than Caucasian. European hair is naturally silky and shiny and considered to be the highest quality of hair extensions you can buy.
Types of hair and hair texture
There are four main types of hair texture: Type 1 - straight, Type 2 - wavy, Type 3 - curly and Type 4 - tightly curled. The hair type and texture can be further broken down into a, b and c based on the hair's curl pattern, density, porosity, width and length.
A general observation across experiments was that straight hair was perceived as younger, healthier, and more attractive than wavy hair and darker shades (medium copper and brown) were perceived more positively than blonde hair.
The rarest natural hair colour is red, which makes up only one to two percent of the global population. You commonly see these hair colours in western and northern areas of Europe, especially Scotland and Ireland. However, natural redheads may not exist for much longer.
According to the survey, the majority of men (42%) found blonde hair to be the most attractive. This was followed by brunette (36%), red (16%), black (5%), and gray (1%).
Hair-graying onset varies with race, with the average age for Caucasians being mid-thirties, that for Asians being late thirties, and that for Africans being mid-forties. Caucasians and Asians typically experience damage to the distal hair shaft, while African-Americans see damage occurring closer to the hair root.
Hair density.
Asians have approximately 150 hairs for every square centimeter on the scalp with about 80,000 hair follicles on an adult scalp. African Americans have the lowest hair density, averaging around 130 hairs per square centimeter and about 60,000 hair follicles on an adult scalp.
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.
Ethnicity is not connected. Selection explains why different hair types exist at all, but for any given person, inheritance studies suggest that curly hair mostly follows the rules of Mendelian genetics. Curly hair is dominant, so someone is more likely to have curly or wavy hair if at least one of their parents does.
The reason Asian hair tends to be thicker is that it has around 10 layers of cuticles. Cuticles are the small areas around the inner protein structure of your hair–they are there to protect those proteins.
The Caucasian race was historically regarded as a biological taxon which, depending on which of the historical race classifications was being used, usually included ancient and modern populations from all or parts of Europe, Western Asia, Central Asia, South Asia, North Africa, and the Horn of Africa.
Green is the rarest eye color in the world, with only 2% of the world's population (and fewer than one out of ten Americans) sporting green peepers, according to the American Academy of Ophthalmology (AAO).
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.
But here's the thing. Despite its popularity, strawberry blonde hair only occurs naturally in between 1 and 2 percent of the world's total population — which means it takes hair color and technique to make it happen for the rest of us. In fact, it's a hue that's been rare yet in demand for centuries.
People with brunette hair are the most attractive.
By presenting pictures of the same woman with different dye hair colors, the researchers found that out of the population analyzed, 67 percent of men preferred the woman with brunette hair and 71 percent of women chose the man with brunette hair.
When to wash. Rossi generally tells his patients they should wash their hair once or twice per week. But if you've had chemical treatments that can make your hair drier — such as bleach, perms or relaxers — you might want to wash it less than once weekly to avoid breaking or brittle hair or split ends, he said.
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.
Hair Texture
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). If your hair dries with a defined curl or loop pattern, you have one of two curl types.