Rheology modifying agent

A rheology modifying agent comprising two or more types of compounds,

• wherein the two or more types of compounds comprise a compound (1a) represented by the following general formula (1a) and a compound (1b) represented by the following general formula (1b):
• wherein:
• each of n1 and n2 is independently an integer of 0 or more and 3 or less;
• R11a is an alkenyl group with 14 or more and 22 or less carbons when n1 is 0 and an alkenyl group with 13 or more and 21 or less carbons when n1 is 1 to 3;
• R11bis an alkenyl group with 14 or more and 22 or less carbons when n2 is 0 and an alkenyl group with 13 or more and 21 or less carbons when n2 is 1 to 3;
• provided that an alkenyl group of R11b is an alkenyl group which is different from R11a when n1 and n2 are the same number;
• each of R2 and R3 is independently an alkyl group with 1 or more and 4 or less carbons or a group represented by —(C2H4O)pH;
• and
• p is an average number of added moles of (C2H4O) and a total for R2 and R3 is a number of 0 or more and 5 or less, and
• wherein a mass ratio of compound (1b)/compound (1a) is 5/95-40/60.