1. Bartuska, W. R.; Silverman, P.Henna hair coloring and/or conditioning compositions,U.S. Patent4,183,366,January 15, 1980.
2. Hatanaka, K.; Hirayama, T.Liquid cleansing cosmetics containing carboxyl group-containing acidic polymers and nitrogen heterocyclic cationic surfactants,Japanese PatentJP 2005187338,July 14, 2005.
3. Kenji, N.; Nakamura, K.Antimicrobial and deodorant cosmetic brush and method of producing the same,U.S. Patent6,604,531,August 12, 2003.
4. Understanding the effect of surfactant aggregation on corrosion inhibition of mild steel in acidic medium
5. Shah, S. S.; Fahey, W. F.; Oude; B. A.Corrosion inhibitors, for distribution of petroleum and petroleum products, consisting of a pyridinium compound and a quaternary ammonium salt,U.S. Patent5,336,441,August 9, 1994.