1. A structured composition comprising at least one liquid oil phase structured by at least one gellant, said at least one gellant comprising a tertiary amide-terminated polyamide resin (ATPA) of the formula (1): ##STR1## wherein, n designates a number of repeating units such that terminal amide groups constitute from 10% to 50% of the total amide groups; R.sup.1 at each occurrence is independently selected from a C.sub.1-22 hydrocarbon group; R.sup.2 at each occurrence is independently selected from a C.sub.2-42 hydrocarbon group; R.sup.3 at each occurrence is independently selected from an organic group containing at least two carbon atoms in addition to hydrogen atoms, and optionally containing one or more oxygen and nitrogen atoms; and R.sup.3a at each occurrence is independently selected from hydrogen, C.sub.1-10 alkyl and a direct bond to R.sup.3 or another R.sup.3a such that the N atom to which R.sup.3 and R.sup.3a are both bonded is part of a heterocyclic structure defined in part by R.sup.3a --N--R.sup.3 ; the composition further comprising at least one amphiphile compound that is a liquid at ambient temperature or has a melting point below 35.degree. C., and has an HLB value of less than 8.0.