Having “thin” hair references the density of the follicles, or how close individual strands are to each other. It's entirely possible to have hair that is both fine and thick, or coarse and thin.
To find out the width, start by taking a single strand of hair and laying it flat on a table. If you can barely see the hair or feel it between your fingertips, then you have fine hair. If the hair strand looks thick and appears to be textured, then the hair is coarse.
It determines your hair damage...
Stronger hair (healthy, coarse hair) can be manipulated more than weaker or more fragile hair (healthy, fine hair), so it goes without saying that if you have fine strands then tightly braided styles and constant manipulation can be damaging.
Hair follicles come in different shapes and sizes, affecting hair texture and width. Some people have wider follicles-and therefore, thicker hair strands-than other people. Genetics influence hair thickness, but other factors like hormones and age are important factors, too.
Caucasians have the highest hair density among the ethnicities studied. Black people have the lowest. Asian people have hair density that falls somewhere in between.
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.
Thick or coarse hair texture is the strongest hair texture and typically feels coarse or thick to the touch. Coarse hair contains all three hair layers – the cortex, cuticle and medulla.
Type 1C hair is straight and is usually coarse and thick, which can result in frizzy hair depending on the environment or climate. When air-dried, this hair type can achieve a tousled look, while still lying flat on the scalp.
Coarse hair is a hair type with hair strands that are thicker and larger in diameter than other hair types. Coarse hair may be a feature of hair that is straight, wavy, curly, or coiled. It tends to be stronger than other hair types, but it is also less pliable, and more prone to dryness and split ends.
It's usually smooth, without a lot of natural volume, and is usually seen in lighter hair colors like blonds. It's important to note that since fine hair refers to the actual size of the hair itself, it does not have anything to do with density, which is how much hair you have.
Diameter or width of the hair is often described using terms like fine and coarse, whereas density refers to thin or thick hair. Fine hair just means that the strand of hair itself is thin. It is possible to have a lot of fine hair or even thick fine hair.
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.
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.
Apply water and see what happens
Human hair wigs turn wavy and curly when wet, spray some water on it and see if it curls. If it curls then it's real human hair, if it does not curl, it is fake.
2A hair tends to have a tousled texture. 2B hair consists of 'S' shaped waves in the lengths, but sits relatively straight at the roots. 2C hair has even more defined 'S' shaped curls that start from the root and continue down the lengths of the hair.
They tend to be straight at the crown and start forming a defined wavy texture at the midpoint of the locks that continues down to the ends. It has a moderate amount of volume and thickness and doesn't lose its shape easily. Even wet hair still maintains a noticeable wavy pattern.
2C type hair is extremely wavy but not coily. The S-shape bends in the hair start off at the roots. These waves are defined and thick. The bends are looser and wider than the tighter structure of curly hair.
Fine hair texture is the most delicate and fragile hair type. Typically, type 2 waves and type 3 curls fall into this category. However, you can find fine hair across a wide variety of curl types. If you find that your hair is both fine and curly, it can be quite the challenge to perfect your curls.
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, Asian and Indian hair samples were put to the test for the World's Best Hair study. Their results put an end to any splitting of hairs over the issue: in terms of health, the Indian hair is the best, topping other ethnic groups on all four counts.
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).
What race is known for straight hair? Caucasian. Caucasian people have rounder hair follicles, resulting for the most part in straight or wavy hair.
Don't worry though, having a variety of textures in your hair is completely normal! The most common reason is genetics. Not only can genetics play a role in your hair texture but your location, along with humidity and the weather can also change the textures in your hair.