Abstract: The composition contains a fundamental active ingredient consisting of the association of thymol, eugenol and cinnamaldehyde, a secondary active ingredient consisting of the association of cuminaldehyde, geraniol, vanillin, borneol, menthol, anethole, terpineol, limonene and different glycosides contained in the essences of mustard and jasmine, a surface-active selected among the different families accepted as emulsifying food additives and an oligosaccharide selected among the mono-oligosaccharides, fructo-oligosaccharides, phyco-oligosaccharides proceeding from algae extracts or vegetable tissue. The composition that has just been described is applied to fruit and vegetables in a diluted bath or in solid form incorporated into the waxes that are usually used in post-harvest treatments.