An anti-
dandruff shampoo and a preparation method therefor. The
shampoo comprises the following components in parts by weight: 20-40 parts of a surfactant, 0.1-0.5 parts of
piroctone olamine, 0.2-0.6 parts of a
plant composition 1, 0.2-0.5 parts of a
plant composition 2, 0.3-1 part of a
plant composition 3, 0.5-2 parts of a conditioner, 1-2 parts of a
thickening agent, 0.01-0.05 parts of a chelating agent, 0.2-1 part of a
preservative, 0.2-0.4 parts of a fragrance, 0.1-0.3 parts of a pH
regulator, and 50-70 parts of water. On the basis that
piroctone olamine is a basic anti-
dandruff ingredient, the plant compositions comprising a
spiraea ulmaria extract, a
verbena officinalis extract, a
hamamelis virginiana bark / leaf / stem extract, a
rubus idaeus fruit extract, and a
portulaca oleracea extract are added as active ingredients, exert synergistic
efficacy, and can significantly increase the anti-
dandruff effect. Tests show that compared to before use, after the anti-dandruff
shampoo is used for 28 days, the change rate of the amount of dandruff is as high as -40.59%, and the change rate of the area of dandruff is as high as -40.13%.