The objective of the paper was to determine the effect of the amount added, kind, and system of the thickeners applied on the oil droplet size distribution in low-fat emulsions. The following thickeners were applied in the analysis: hydroxyphosphate distarch (instant starch from waxen corn, and starch from tapioca), natural gums (xanthan gum, guar, and carob starch). The following was determined in the fat emulsions: viscosity, distribution, and the average droplet size. The dispersion index was determined. It was found that the low-fat mayonnaise containing the additions: 3 % of hydroxyphosphate distarch (planned for cooking) and 0.7 % of carob starch was the most appropriately formulated emulsion.