- The average person has between 100,000 and 150,000 strands of hair on their head
- Hair is the fastest growing tissue in the body. The only thing that grows faster is bone marrow.
- Everybody sheds between 40-150 strands of hair per day.
- Crash dieting can cause temporary hair loss.
- Most drugs cause hair loss.
- Thyroid imbalance causes hair loss.
- Iron deficiency causes hair loss.
- Humans are born with all of their hair follicles and there is no possible way to increase the amount of hair follicles you have.
- Hair turns grey as a result of the pigment cells in the hair follicle not working properly. The hair bulb slows melanin production as a result of age or stress.
- Hair is produced in the hair shaft beneath the skin; therefore it takes 13 days to see grey/white hair after it is produced.
- On average, hair grows .3 – .5 mm per day.
- The length of the growing phase of hair shortens as you age.
- When you are born, you have about 1000 hair follicles per square centimeter. This number drops as you age.
- Each hair follicle grows a completely new hair about 20 times in a lifetime.
- Blow-drying your hair works by changing hydrogen bonds to alter the shape. Water also changes hydrogen bonds; hence the reason women hate humidity.
- The only part of hair that is not dead is the hair that is inside your scalp.
- African hair grows slower and is more fragile than European hair.
- Asian hair grows the fastest and has the best elasticity.
- It takes about 7 years to grow your hair to your waist, and 3 years to grow to your shoulders.
- The only way to get rid of “split ends” is to cut them. There is no way to completely repair them.
- Hair grows the fastest during the summer, sleep, or between the ages of 16 to 24.
- The growing phase of hair lasts between 3-5 years on average.
- Scientists can tell what you ate or drank, or the environment you live in, by examining a small piece of your hair.
- Research shows that hair becomes drier with age.
- Hair transplantation is the only permanent solution for hair loss.
