The invention relates to a surfactant for
shampoo and a preparation method of the surfactant, and belongs to the technical field of surfactants. The surfactant for
shampoo comprises a compound
amino acid surfactant and a synergistic surfactant, the composite
amino acid surfactant is prepared by taking
corn oil,
coconut oil and L-
alanine as raw materials on the basis of an existing process, and the synergistic surfactant comprises
sodium cocoyl isethionate, cocamidopropyl PG-
sodium dimethyl
ammonium chloride phosphate and
potassium cocoyl hydrolyzed oat
protein. After the sebum removing agent is added into the
shampoo, the sebum removing effect can be better than that of SLES without high proportion and 4%
mass content, the substitution effect is excellent, and the performance and the cost are both considered.