Type 1 hair is hair that lies flat, or straight. Straight locks tend to be on the shinier side because the hair's natural oils are able to travel from root to tip. This hair category includes divisions 1A, 1B, and 1C. Type 1A is “stick” straight hair that has no hint of curl or wave.
Straight hair (Type 1) lies flat, or straight on the scalp. As the hair's natural oils are able to travel from the scalp to the ends, Type 1 hairs reflect the most sheen. There are three subcategories for straight hair: Type 1A hair is very straight and fine, with no hint of wave or curl.
1B hair, on the other hand, is the most common hair type. It is straight and flat but has some volume. 1C hair is the next type.
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.
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 least common hair type, 1A hair is extremely fine and perfectly straight. Consequently, it can look a bit flat and limp and might prove difficult to style. Dry shampoo can be your ally in the fight against excessive oil and thick hair products that might weigh your hair down are best avoided.
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.
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.
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.
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.
Another defining feature of type 1a hair is its thinness. Each strand of type 1a hair is extremely fine and therefore, easily falls out or sheds.
This can give the appearance of a very subtle, loose wave or curl. However, type 1 hair can hold curls or waves for extended periods only by using styling tools or products. So while type 1 hair can have a slight wave or bend, it is not considered to be a naturally curly hair type.
The verdict is in: there's nothing to dislike about type 1a hair. Sure, it may throw a few snags into your haircare and styling routine — flatness, oiliness, and breakage can often show up. But on the bright side, these issues can be remedied with the right haircare practices and products in place.
And while the results did vary, in the end we found that 58% of the fellas agreed that curlier is sexier.
Type 1A hair is very straight and fine, with no waves or curls whatsoever. This hair type tends to get very oily and requires frequent shampooing. It is the rarest hair type and is common among women of Asian descent.
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.
Caucasian hair is generally straight or wavy and is the thinnest, while its cross-section is relatively elliptic. As for African hair, it is very curly, its thickness is intermediate and the shape of cross-section is highly elliptic.
Asian hair the most dominant hair type in the world out speeds the rest with a growth rate of 1.3cm per month, and despite an estimated 80,000 to 140,000 scalp hairs, it usually has the least density.
Individuals of African ancestry, for example, are more likely to have curly hair due to the oval shape of their hair follicles. Additionally, the Keratin Associated Protein (KAP) cluster genes, responsible for the structure of keratin fibers, have been found to have variations in many African populations.
Curly hair and wavy hair tend to get a lot more frizzier when compared to straight hair. Your hair type is determined by the shape of your hair follicle. If you have a rounded follicle, your hair grows straight. If you have flat hair follicles, your hair type becomes wavy or curly, making it more prone to frizz.
Fine Hair. Fine hair is typically very soft and delicate. Made up of only two hair layers (the cortex and the cuticle), these hairs can be silky smooth and sleek, but they're also the most prone to breakage.
In the present study blondes were not preferred by either sex: a clear preference for brunette hair coloration over blondes and redheads was indicated. In concurrence with both earlier studies, the results of this study indicated red hair as the least preferred hair color.