The thickest strand of human hair is 772 micrometres (0.03 inches) and was plucked from the beard of Muhammad Umair Khan (Pakistan), in Lahore, Punjab, Pakistan, as verified on 3 March 2021. The hair was discovered on Muhammad's chin as part of his beard.
Your hair density is generally highest at your vertex, the area at the back of your head also known as your crown. Hair density varies widely from person to person and tends to differ by ethnicity.
It varies not only from one person to another but also from one strand to another. Your hair strands could measure anything between 0.04mm to 0.12mm depending on a wide variety of variables. For example, if you pluck a hair strand from the crown of your head and one from the fringes, you're likely to see a variation.
The luxurious locks of Xie Qiuping (China) achieved the longest hair in the world on a female with a length of 5.62 m (18 ft 5 in), as verified on 8 May 2004. She started growing her hair in 1973, when she was just 13 years old.
Chinchillas are rodents that are native to the Andes Mountains in South America. Out of all land animals, the chinchilla has the thickest fur, containing 20,000 hairs on each square inch of its body. Fifty hairs grow from one follicle, where as humans only grow one hair per each follicle.
These results show that human hair has a less stable response, but generally is much stronger than horse hair.
Human and bear hairs are the strongest, exhibiting a plateau-like response followed by higher strain hardening.
Sex: Male hair grows faster than female hair. Age: Hair grows fastest between the ages of 15 and 30, before slowing down. Some follicles stop working altogether as people get older. This is why some people get thinner hair or go bald.
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.
"Your hair bundles peak at around 12 years old." Then, sadly, as you age, bundles of four become bundles of three, bundles of three become bundles of two, and it's all downhill from there. End result: hair appears thinner and less full.
Thicker strands of hair are more likely to have a defect, making them more prone to breakage, the researchers believe. Lustrous, thick hair may be desirable but it is not necessarily the strongest. Scientists said thin hair tends to be stronger than thicker locks, after looking at the way they break.
First things first, thick hair doesn't necessarily mean healthy hair. Some peeps desire thick hair because they associate it with fuller, healthier-looking hair. Many folks try to avoid thinner hair because of its perceived links to unhealthy hair and hair loss.
The cuticle layer in Asians is thicker with more compact cuticle cells than that in Caucasians. Asian hair generally exhibits the strongest mechanical properties, and its cross-sectional area is determined greatly by genetic variations, particularly from the ectodysplasin A receptor gene.
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.
Most people of East Asian descent have thick, straight hair. This corresponds with a SNP (rs3827760) in the EDAR gene which is involved in hair follicle development. The ancestral allele of this SNP is the A-allele. The G-allele is the newly derived allele that leads to the thick, straight hair.
Nearly everyone has some hair loss with aging. The rate of hair growth also slows. Hair strands become smaller and have less pigment. So the thick, coarse hair of a young adult eventually becomes thin, fine, light-colored hair.
Genetic factors appear to play a major role in determining hair texture—straight, wavy, or curly—and the thickness of individual strands of hair. Studies suggest that different genes influence hair texture and thickness in people of different ethnic backgrounds.
The short answer is “not very much.” Unless your hair is very long, it's unlikely to weigh more than about a pound.
How Does Hair Grow? The average rate of hair growth is between 0.3 and 0.4 millimeters per day, or between 0.5 and 1.7 centimeters per month, or roughly 6 inches per year. Everyone's hair is unique and a variety of factors can affect how quickly it grows.
Vitamins B and D factor big in healthy hair. So do zinc, omega-3 fatty acids, and the B vitamin biotin. Your doctor can test you for deficiencies. Ask them whether you should take a multivitamin or supplement and how much.
Previous research has found that human hair has a tensile strength of around 200–260 MPa, which is comparable to steel. You could carry a person with 500–1000 human hairs.
The whale shark isn't only the largest fish in the oceans. It also has the thickest skin of any living creature – in the oceans or on land. Typically around 10 cm (4 in) in thickness, the skin offers vital protection and insulation for the animal.
Thick (Coarse)
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.