mono- or disubstituted with a group ???R1???(OR1)nR1R2 where R1 is an alkylene group such as ethylene, propylene or mixtures thereof, n is an integer greater than 1, R2 is a lactobionamide, maltobionamide, cellobionamide, mellibionamide or gentiobionamide group. (ii)3(b) The polyhydroxylated fatty amides in accordance with the present invention are preferably chosen from those described in patent