Hair is composed of 50.65% carbon, 20.85% oxygen, 17.14% nitrogen, 6.36% hydrogen, and 5.0% sulfur. Hair also contains trace amounts of magnesium, arsenic, iron, chromium and other metals and minerals.
Castor oil helps grow missing scalp hair. Put on after washing head. After every time you put it on, you have to leave it for 24 hours. The effect shows in 3 - 6 months.