The invention relates to a method of obtaining a stable product of natural vegetable origin, particularly macadamia oil, which is treated in a reactor in which the oil is exposed to a continuous flow of ozone and, subsequently to a feedback of end gases under the influence of an electromagnetic field. The treatment and production time is significantly reduced under specific conditions in terms of temperature, pressure, gas streams, pH and substance saturation volumes with ozone, which is obtained in an oxygen-fed generator. According to the invention, the reaction causes the formation of a novel compound: topically-applied ozone cream which is used to treat infectious processes. The inventive ozonized cream can penetrate and regenerate the epithelial tissue without causing skin irritations associated with similar known treatment methods. The compound is stable and the fundamental nature thereof does not tend to alter.