Table 1. Classification of surfactant and hair types.

Classification of the surfactants
Charge	Ingredients	Product type	Hair type
Anionic	Ammonium lauryl sulfate, sodium laureth sulfate, sodium lauryl sarcosinate, sodium myreth sulfate, sodium pareth sulfate, sodium stearte, sodium lauryl sulfate, α-olefin sulfonate, ammonium laureth sulfate	Sulfate shampoo and clarifying shampoo	Oily hair, Asian hair
Cationic	Trimethylalkylammonium chlorides and the chlorides or bromides of benzalkonium and alkylpyridinium ions	Used in combination with other surfactants as an antistatic agent	All types of hair
Nonionic	Fatty alcohols, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, and oleyl alcohol	Cowash	African hair; severely damaged hair
Amphotheric	Alkyl iminopropionates and (amido) betaines and cocobetaine	Sulfate-free shampoo	Chemical treated hair; infants