ABSTRACT
I. INTRODUCTION Liquid detergents provide convenience in our daily life ranging from personal care of hand and body cleansing and hair cleaning and conditioning to home care in dishwashing and cleaning of various household surfaces to fabric care in laundering and fabric softening. Compared with powdered detergents, liquid detergents dissolve more rapidly, particularly in cold water, they generate less dust, and they are easier to dose. It is not surprising, therefore, that liquid forms of cleaning products have been gaining in popularity since their introduction in the late 1940s.
