2. Shampoo

3.  We use shampoo almost every day to remove sebum on our scalps.  Shampoo helps your hair to become shiny and manageable.  It is obvious that shampoo is useful.

6. “Surfactant” is also called “surface- active agent”. It is the prime ingredient of shampoo. Most of Shampoo contains synthetic surfactants instead of natural surfactants which are more expensive.

7.  “The hydrophobic end secures itself in the oily layer of sebum while the hydrophilic end remains anchored in water. As the hair is rinsed, the soiled sebum is washed away.(Schwarcz)”

9. After shampooing, If you do not rinse enough with water, synthetic surfactants will remain on your scalp. And then the synthetic surfactants irritate your scalp. This can make your scalp have irritant contact dermatitis. Consequently, irritant contact dermatitis causes hair loss.

10. Especially two kinds synthetic surfactants, Sodium Lauryl Sulfate (SLS) and Sodium Laureth Sulfate (SLES), are widely used to produce shampoo. Those two surfactants easily penetrate into the skin, and stay in the liver, heart, lungs and brain for 5 days creating toxins.

11. Synthetic surfactants cause protein denaturation in cell.

12. synthetic surfactants can make liver dysfunctional.

14.  We should avoid overuse of shampoo. Two pumps are recommended.

15.  We should rinse thoroughly after shampooing.

16.  We can replace with shampoo that contains natural surfactants instead of synthetic surfactants.

17. Kim, Youngdo, dir. 합성계면활성제와 천연 계면활성제의 차이. KBS, 2011. DVD. NAVER. N.d. Photograph. NAVER, Korea. Web. 2 Dec 2013.. Schwarcz, Joe. "Secrets of Shampoo." Washingtonpost. The Washington Post Company. Web. 6 Dec 2013..