1. Hair is (almost) indestructible
It decays very slowly and resists many acids and chemicals, which is why ancient hair can still be found in tombs thousands of years old.
2. We shed daily
On average, each person loses about 50–100 hairs every day naturally.
3. Fastest-growing tissue after bone marrow
Hair grows about 0.3–0.5 mm per day, adding up to around 6 inches per year.
4. Blondes really do have more
Naturally blonde people average 150,000 strands, brunettes around 100,000–110,000, and redheads about 90,000.
5. Stronger than it looks
A single strand can support around 100 grams (3.5 ounces). Collectively, your full head of hair could theoretically lift two elephants!
6. All about melanin
Your natural hair color depends on the mix and amount of eumelanin (brown/black) and pheomelanin (red/yellow).
7. Keratin power
Hair is mostly made of keratin, the same strong protein found in animal claws, feathers, and hooves.
8. No feeling, no pain
Hair itself is dead once it exits the follicle, which is why cutting it doesn’t hurt.
9. Gray hair isn’t just about age
Genetics, stress, health conditions, or vitamin deficiencies can cause premature graying, even in teenagers.
10. Follicles for life
You’re born with all the hair follicles you’ll ever have (about 5 million), including roughly 100,000 on your scalp — and you don’t grow new ones later.
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