A composition which is the reaction product of reactants comprising dimer fatty acid and/or trimer fatty acid, a mono-alcohol comprising at least 3 carbon atoms and a polyol comprising at least 2 hydroxyl groups. The composition comprises dimer fatty diester and/or trimer fatty trimester, and oligoester comprising more than one dimer fatty acid and/or trimer fatty acid residue. The invention also provides an emulsion comprising the composition, particularly in the form of a personal care product, a method of emulsifying using the composition and use of the composition as an emulsifier.
