- Name: Hair
- Type: Protein filament
- Location: All over the exterior of the human body
- System: Integumentary system
- TA ID: A16.0.00.014
- FMA ID: 53667
19 Hair Facts for Kids
- Human hair is a protein filament found on the head, face, arms and other parts of the body.
- Hair is part of the human Integumentary system.
- Hair is primarily made from the protein alpha-keratin, also known as a-keratin.
- The human head can have between 90,000 and 150,000 hairs.
- The hair on your head can live between two and seven years.
- Hair is found all over the human body, except for a few locations, like the lips and the palms of your hands.
- Hair grows from follicles located in the dermis layer of human skin.
- A hair strand has three main parts and they are the cortex, cuticle and medulla.
- The cuticle is the outer part of a hair strand and forms from dead cells.
- The cortex is between the cuticle and the medulla. It contains the pigment that gives your hair its color.
- The medulla is the innermost part of a stand of hair. Its role is unknown at this point.
- Human hair comes in a wide variety of colors, between very light blonde to black.
- The melanin in the cortex of your hair is what gives it color.
- The Fischer-Saller scale is used to determine the color of human hair and rates hair color using letters in the alphabet and roman numerals.
- Blond is graded between A and O, with A being the lightest and O being the darkest. Brown is graded between P and Y, with P being the lightest and Y being black. Red hair is graded using roman numerals, between I and IV, with I being the lightest and IV being the darkest. Blond red hair is graded using roman numerals, between V and VI, with V being the lightest and VI being the darkest.
- Hair loss is known as pattern hair loss when it’s not related to medical treatment or disease.
- In males, hair loss is called male-pattern hair loss (MPHL).
- In females, hair loss is called female-pattern hair loss (MPHL).
- Hair loss has no physical effects on the human body. The most common symptoms behind hair loss are psychological.
Pictures of Human Hair
A picture of hair on the human head.
Credit: Adam Eli Werner
A picture of hair on the human forearm.
Credit: Arthur Hall
A picture of hair on the human leg.
Credit: George William
A picture of hair on the human chest.
A picture of hair in the human armpit.
A picture of male pattern baldness.
Additional Resources on Human Hair
- Hair Facts and Myths – Read some fun hair facts and myths on the Farmer’s Almanac website.
- Male Pattern Baldness – Learn about going bald and male pattern baldness on the MedlinePlus website.
- Hair Anatomy – Britannica – Find out more cool facts about the anatomy of hair on the Britannica website.
- Hair – Wikipedia – Discover more about the different types of human hair on the Wikipedia website.