Abstract: A natural extract from seeds of Rosa canina which has a high antimicrobial activity is provided. The extract, which is diluted in water at different concentrations, constitutes an antimicrobial solution used in various fields: in environmental disinfection, both in humans and animals, as a base for antibacterial/antifungal preparations for topical, cutaneous or mucosal use. The extract is used in the preparation of disinfectant solutions that are used in the outpatient, hospital and domestic field, for air conditioner filters and for environments used for the preparation of food, as an ingredient in mouthwashes, toothpastes and skin creams.