Pioneers also made it when they were traveling along the Oregon Trail and also by earlier people. Usually if a person is hygienic the average amount of soap that they use in a year is 25 pounds. Back to Top Summary Hair is made out of dead cells. It is a protection function for the eyes, the ears, and the nose. The hair protects bad matter form entering the inside organs.
Hair has several different parts that start at the root and go to the shaft.
The hair also has the parts of the Cortex, the Medulla, and the Cuticle. Consumers today would like to buy the best shampoo to make their hair look better. So there were tests taken that would tell which shampoo is the strongest out of the three shampoos Pert Plus, Pantene Pro-V, and Thermisilk.