1. Hair is the fastest growing tissue in the body, second only to bone marrow.
2. An average head of hair could hold 10-15 tons if only the scalp was strong enough.
3. The average hair follicle contains more protein than an egg.
4. Sweaters made of human hair were commonly worn in the 17th century.
5. Rembrandt painted with brushes made from the hair of his lovers.
