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Tuhis Beauty

Why Do White People Have Straight Hair? (The Science Behind)

Straight hair is typical for white people because they have the genes that can create straight hair, just as they have the genes that can produce wavy or curly locks.

There is no such thing as a single gene that causes straight hair or a wavy hair gene.

Many genes collaborate to give an individual their phenotype. It’s all about the hair shaft.

The Science Behind Straight Hair

Let’s get scientific for those who like to learn about beauty.

The structure of straight hair is derived from the cortex (the middle and thickest layer of your hair shaft) in what’s known as “Type 1” hair.

The hair fibers are round, allowing them to fall equally on all sides of the head.

The protein structure of straight hair and the disulfide bonds that connect them are also important.

It contains few to no hooks at the end of the follicle, preventing it from growing at an angle. In thick hair, however, variations are not uncommon.

Hormones and certain medications can alter the hair’s texture, causing it to develop differently from how it was initially formed.

Why Straight Hair is Good

It’s Tough!

Due to its simple design, it’s simple for natural oils from the scalp (sebum) to reach down to the hair shaft, giving naturally straight hair all the nourishment it needs.

This is because straight hair remains strong when subjected to strong brushing, braiding, or styling.

A Mirror-like Shine

People with straight hair can save money and use a bit of extra shine serum since the smooth surface of the hair reflects more light, resulting in smoother, shinier hair.

It’s Easy to Grow Out

The ability to grow long and strong is one of the finest aspects of naturally straight hair.

Because it is more hydrated due to sebum, it is less prone to split ends and breakage, giving it strength and suppleness that snap back.

There are some physical characteristics of the person that are unchangeable, at least temporary. This might be either wonderful or awful.

For instance, height can’t increase with time, skin color isn’t alterable, and straight hair can’t become curly with simple treatments.

Genes Control the Straightness or Curliness of Your Hair

The hair that is curled is an autosomal dominant characteristic. This is when one of the parents has the mutated gene while the other doesn’t.

People can get the autosomal dominant disease, meaning they possess a 50 percent chance of passing on the altered and dominant gene to their children).

Curly hair has the autosomal dominant characteristic, implying that one parent poses straight hair and the other poses curly hair.

As a result, you inherit both genes but express the curl gene over the straight hair gene, resulting in yourself.

If the strands of your hair are equally formed but of different strengths and types, you may get hair somewhere in the middle, not very straight, and not very curly.

Why don't black people have straight hair

Effect of Genes on Hair Texture

The curly hair genes are 85-95 percent hereditary, according to a 2009 study. This implies that in that sample, nine-tenths of the instances of variation in the hair texture may be related to the DNA.

The follicles themselves also determine the hair’s curvature.

The follicles are symmetrical if they are appropriately polished, while those that aren’t are asymmetrical; as a result, their hair grows oval-shaped and coils as it grows.

Straight and Curly Hair is Different in Structures

The type of hair strand and its composition impact the hair’s texture, whether straight or curly.

In one study conducted in 2007, hair samples from humans were collected to examine structural characteristics associated with curl pattern formation.

Electron microscopy was used to compare the straight and curly hair fibers. It was discovered that the former had an uneven distribution of keratin, whereas the latter was symmetrically organized.

For straight hair to look beautiful and elegant in loose form, it must be carefully looked after. Trim the ends regularly (have you tried cutting with hot scissors?).

If you style your hair frequently, use a cold air dryer and a round comb. If you prefer an iron or curling iron, check out the thermoregulated models.

Before going out, comb your hair thoroughly with a comb or brush, and apply a shine product. If your hair is frizzy, try a light-fixing spray.

Straight hair is much easier to classify than curls. All hair, regardless of texture, is divided into four types, and only the first one belongs to straight hair.

It is challenging to turn curly hair into straight hair, or vice versa since the initial data inherent in our beauty genes is passed on from generation to generation.

We found out what happens to hair when we change its character.

The main trump card of any change in hair structure is an aggressive effect on them.

And stylists in this field work like real sorcerers: they determine your hair type, select the necessary formulations, keep them strictly for the allotted time, and then apply some solutions again.

Why does white folks' hair grow straight
  • Straight hair is easy to comb.
  • Not easy to style

Frequently Asked Questions

Do all white people have straight hair?

Not all of them, but the majority have straight hair. Some have curled hair.

Is straight hair easier to comb?

Yes. It’s not as hard as curled hair because it’s already straight. You won’t have a hard time combing it.

Are curly hairs nasty?

No. In fact, they are great-looking with those ending curls.


White people have straight hair since they have those genes responsible for making wavy locks vulnerable. This is why most of them have straight hair rather than curly.


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