A composition is disclosed which comprises:(A) a compound represented by the formula ##STR1## wherein: R.sup.1 and R.sup.2 are independently hydrocarbyl groups of from about 2 to about 24 carbon atoms; R.sup.3 is a trivalent hydrocarbyl group of from 1 to about 16 carbon atoms; R.sup.4 is CH.sub.2 CH.sub.2 O, CH.sub.2 CH.sub.2 CH.sub.2 O or a mixture thereof; X is SO.sub.3.sup.-, SO.sub.4.sup.- or COO.sup.- ; and Y is an alkali metal or ##STR2## wherein R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are independently hydrogen or methyl; and n is a number ranging from zero to about 15; and(B) a compound represented by the formula R.sup.9 -(R.sup.10).sub.m A.sup.-D.sup.+ wherein: R.sup.9 is a hydrocarbyl group of from about 8 to about 24 carbon atoms; R.sup.10 is CH.sub.2 CH.sub.2 O, CH.sub.2 CH.sub.2 CH.sub.2 O or a mixture thereof; A is SO.sub.3.sup.-, SO.sub.4.sup.- or COO.sup.- ; D is an alkali metal or ##STR3## wherein R.sup.11, R.sup.12, R.sup.13 and R.sup.14 are independently hydrogen or methyl; and m is a number ranging from 1 to about 18. An enhanced oil recovery method employing the foregoing composition as a sufactant is also disclosed.