Recently several authors, in addition to an increased frequency of human cutaneous mycoses spread by domestic animals (1), have reported an increased number of therapeutic failures of the antimycotic drugs (2, 3), especially against Microsporum canis (4). This chemoresistance showed by dermatophytes justifies the search for new effective antimycotic drugs and our purpose was to test the in vitro antifungal activity of some essential oils originating from spontaneous Labiatae of the Mediterranean area (thyme, savory, calamint, lavender, and rosemary). The properties of these essences against viruses, bacteria, and helminths as well as against some fungi are well-known, while their antifungal activity against Microsporum can is and Microsporuin gypseunz, which is studied in this paper, was previously unknown. Several works have dealt with the antibiotic activity and the parasiticidal effectiveness of thyme (5-11), savory (12-14), calamint (15-18), lavender (8, 19-21), and rosemary (8, 22-24).