Scientifically, black hair is the slowest growing hair type due to its elliptical shape and only grows about one third of an inch per month.
African hair grew at a much slower rate than caucasian hair (mean +/- SD 256 +/- 44 vs. 396 +/- 55 microm day(-1)), and telogen counts were frequently higher in African hair (mean +/- SD 18 +/- 9% vs. 14 +/- 11%).
Asian hair shows the fastest growth rate in comparison to the other two hair types. African hair has the lowest growth rate.
It's a myth that Black hair doesn't grow. All human hair grows at about half an inch a month, depending on your health and genetics. Having long hair is really more about how much hair you retain after breakage. Black hair, because it's curly, can be weaker than straighter hair.
A Caucasian person's hair also generally grows at a slightly faster rate than an African-American's hair. With that in mind, the common causes of hair loss are universal among the races, and most available treatments can be beneficial for hair restoration in both Caucasian and African-American patients.
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, 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.
So, why is Afro-textured hair so fragile? With its tight curls and twists, is more prone to breakage for several reasons. Its shape increases tangling and makes combing harder. The shape also creates internal stresses when the hair is unbent, untwisted or stretched that lead to fracturing.
Scientifically, black hair is the slowest growing hair type due to its elliptical shape and only grows about one third of an inch per month. Alongside slow growth, you'll likely also encounter issues such as breakage, thinning and shedding whilst trying to grow your afro hair; typically, this is due to dehydration.
There are two reasons why we believe African hair texture is genetic. Firstly, the texture is universal in Africans, while nearly absent from other ethnic groups. Secondly, it is consistently passed down to the children in each new generation.
Which ethnicity has the longest hair? Asian hair is the longest. For example, the Red Yao Tribe, living in a village in the Chinese mountains, has the longest hair. Their women can grow hair almost the length of their height.
Black Hair is Easier to Maintain
The darker the hair, the higher the concentration of melanin, therefore, black hair has the highest concentration. The benefit of having excess melanin in hair is it's less prone to sun damage, which is important to Sri Lankans as we are constantly under the sun.
Because 4C hair experiences so much shrinkage, it can feel like your hair is growing very slowly or not at all. However, if you take care of your hair, you will notice growth when you stretch out your hair. Another reason 4C hair can appear to grow slowly is because it is so fragile.
Comparatively, African female participants' hair grew 4 inches (10 cm) per year, while Caucasian female participants' hair grew a little more than 5 inches (13 cm) per year. The hair growth rate of the male participants didn't significantly differ from that found for women.
Black hair follicles have an elliptical shape that grow in a spiral and results in the slowest growth rate, at only about a third of an inch per month. It is also more fragile and prone to breakage. Asian hair follicles are round, usually very straight, and strong.
Hair grows at about the rate of six inches per year, fact. Yet, so often we are left questioning why can we not see our hair growth and wondering if Afro hair only grows to a particular length. Honestly, we understand these questions and today we are here to answer them, while dismissing any false assertions.
You should ideally wash your natural black hair once every seven to fourteen days. Use a mild cleansing shampoo and a gentle conditioner. You may opt for sulfate-free shampoo to cleanse your hair gently without stripping it of natural oils.
Genetics (which controls ethnicity) is the number one cause of hair loss. Certain races have higher rates of hair loss compared to others. Caucasians have the highest rates out of all the ethnic groups. On the opposite end of the spectrum, Native American Indians, Inuits, and Chinese have the lowest rates.
More circular-shaped follicles cause hair to grow straighter, while more curly hair is caused by more elongated, oval-shaped hair follicles. Hair follicles can also affect the thickness of hair strands. African hair is seen to be much thicker and more dense meaning that the hair follicles are larger.
Fros don't absorb as much moisture as our caucasian cousins' hair, added to this the structure of our hair (curls and kinks, and increased density) means that nutrients often don't travel along the length of our strands as well as we'd like.
Caucasians Lose The Most Hair
In terms of which ethnicity tends to experience the most hair loss, Caucasians are the undisputed leaders.
This may be related to differences in body composition, which is known to differ between ethnic groups. 62, 105 More specifically, black adults were found to have a relatively higher muscle mass (leading to a lower sarcopenia prevalence) compared to whites and Asians.
Asian and black skin has thicker and more compact dermis than white skin, with the thickness being proportional to the degree of pigmentation. This likely contributes to the lower incidence of facial rhytides in Asians and blacks.