Wetting timeTo test the efficacy of the shampoo, wetting ability of a surfactant needs to be calculated which depends on the concentration of surfactant [19]. For the evaluation of wetting ability of the shampoo, canvas disc method is used which is an efficient, quick, easy, and reliable method. The prepared shampoo shows the wetting time of the about 120 s. The maximum of wetting time shows that the shampoo contains lower amount of detergents.