Cleanser composition containing phosphate ester and ether acetate surfactants

A cleanser composition comprising at least 30% by weight, based on the total weight of the composition, of the following component (A):

• a phosphate surfactant represented by the following formula (1) or a mixture thereof with another phosphate surfactant represented by the following formula (2), wherein the weight ratio of the phosphate surfactant (1) to the phosphate surfactant (2) is 100/0 to 70/30;
• ##STR3## wherein R.sup.1, R.sup.2 and R.sup.3 each represents a linear or branched alkyl or alkenyl group having 8 to 18 carbon atoms, X.sup.1, X.sup.2 and Y each represents a hydrogen atom, an alkali metal atom, a triethanolammonium group or an ammonium group;
• and the following component
• (B):
• an ether acetic acid surfactant represented by the following formula (3);
• R.sup.4 --O--(CH.sub.2 CH.sub.2 O).sub.p --CH.sub.2 CO.sub.2 X.sup.3( 3)
• wherein R.sup.4 represents a linear or branched alkyl or alkenyl group having 8 to 18 carbon atoms, X.sup.3 represents a hydrogen atom, an alkali metal atom, a triethanolammonium group or an ammonium group, and p represents a number of 3 to 15;
• wherein the weight ratio of the component (A) to the component (B) is 75/25 to 98/2 wherein component (B) prevents an increase in viscosity of said composition;
• and
• component (C):
• a polyhydric alcohol;
• and
• wherein the weight ratio of the sum total of the components (A) and (B) to (C) is 80/20 to 99/1.

A process for preventing an increase in the viscosity of a solution containing the following component (A) in an amount of 30% by weight or above, which comprises adding the following component (B) to said solution:

• component (A):
• a phosphate surfactant represented by the following formula (1) or a mixture thereof with another phosphate surfactant represented by the following formula (2), wherein the weight ratio of the phosphate surfactant (1) to the phosphate surfactant (2) is 100/0 to 70/30;
• ##STR4## wherein R.sup.1, R.sup.2 and R.sup.3 each represents a linear or branched alkyl or alkenyl group having 8 to 18 carbon atoms, X.sup.1, X.sup.2 and Y each represents a hydrogen atom, an alkali metal atom, a triethanolammonium group or an ammonium group;
• component (B):
• an ether acetic acid surfactant represented by the following formula (3);
• R.sup.4 --O--(CH.sub.2 CH.sub.2 O).sub.p --CH.sub.2 CO.sub.2 X.sup.3( 3)
• wherein R.sup.4 represents a linear or branched alkyl or alkenyl group having 8 to 18 carbon atoms, X.sup.3 represents a hydrogen atom, an alkali metal atom, a triethanolammonium group or an ammonium group, and p represents a number of 3 to 15.