Variable costs: herbs are used to make SOAP.Variable: 1. clean the surface using 2 types of SOAP. 2. ph values of SOAP.Klisoerin: quantity control variables are used to make SOAP.
variables: herbs used in soap making dependent variable: 1. The cleanliness of the skin in the use of soap 2 type 2. The pH of soap control variable : the glycerine used in soap making